List of early medieval watermills
Encyclopedia
This list of early medieval watermills comprises a selection of European watermill
Watermill
A watermill is a structure that uses a water wheel or turbine to drive a mechanical process such as flour, lumber or textile production, or metal shaping .- History :...

s spanning the early Middle Ages
Early Middle Ages
The Early Middle Ages was the period of European history lasting from the 5th century to approximately 1000. The Early Middle Ages followed the decline of the Western Roman Empire and preceded the High Middle Ages...

, from 500 to 1000 AD. Largely unaffected from the turbulent political events
Migration Period
The Migration Period, also called the Barbarian Invasions , was a period of intensified human migration in Europe that occurred from c. 400 to 800 CE. This period marked the transition from Late Antiquity to the Early Middle Ages...

 following the demise of the Western Roman Empire
Decline of the Roman Empire
The decline of the Roman Empire refers to the gradual societal collapse of the Western Roman Empire. Many theories of causality prevail, but most concern the disintegration of political, economic, military, and other social institutions, in tandem with foreign invasions and usurpers from within the...

, the importance of watermill
Watermill
A watermill is a structure that uses a water wheel or turbine to drive a mechanical process such as flour, lumber or textile production, or metal shaping .- History :...

ing continued to grow under the new Germanic
Germanic peoples
The Germanic peoples are an Indo-European ethno-linguistic group of Northern European origin, identified by their use of the Indo-European Germanic languages which diversified out of Proto-Germanic during the Pre-Roman Iron Age.Originating about 1800 BCE from the Corded Ware Culture on the North...

 lords. The sharp rise in numbers of early medieval
Early Middle Ages
The Early Middle Ages was the period of European history lasting from the 5th century to approximately 1000. The Early Middle Ages followed the decline of the Western Roman Empire and preceded the High Middle Ages...

 watermills coincided with the appearance of new documentary genres (legal code
Legal code
A legal code is a body of law written by a governmental body, such as a U.S. state, a Canadian Province or German Bundesland or a municipality...

s, monastic
Monastery
Monastery denotes the building, or complex of buildings, that houses a room reserved for prayer as well as the domestic quarters and workplace of monastics, whether monks or nuns, and whether living in community or alone .Monasteries may vary greatly in size – a small dwelling accommodating only...

 charter
Charter
A charter is the grant of authority or rights, stating that the granter formally recognizes the prerogative of the recipient to exercise the rights specified...

s, hagiography
Hagiography
Hagiography is the study of saints.From the Greek and , it refers literally to writings on the subject of such holy people, and specifically to the biographies of saints and ecclesiastical leaders. The term hagiology, the study of hagiography, is also current in English, though less common...

) which were more inclined to address such a relatively mundane device than the ancient
Classical antiquity
Classical antiquity is a broad term for a long period of cultural history centered on the Mediterranean Sea, comprising the interlocking civilizations of ancient Greece and ancient Rome, collectively known as the Greco-Roman world...

 urban-centered literary class had been. This partly explains the relative abundance of medieval literary references to watermills compared to former times.

Nevertheless, the quantitative growth of medieval evidence appears to be more than a mere reflection of the changing nature of surviving sources: by Carolingian times, references to watermills in the Frankish Realm
Carolingian Empire
Carolingian Empire is a historiographical term which has been used to refer to the realm of the Franks under the Carolingian dynasty in the Early Middle Ages. This dynasty is seen as the founders of France and Germany, and its beginning date is based on the crowning of Charlemagne, or Charles the...

 had become "innumerable", and at the time of the compilation of the Domesday Book
Domesday Book
Domesday Book , now held at The National Archives, Kew, Richmond upon Thames in South West London, is the record of the great survey of much of England and parts of Wales completed in 1086...

 (1086), there were an estimated 6,500 watermills in England alone. By the early 7th century, watermills were well established in Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

, and began to spread from the former territory of the empire into the non-romanized parts of Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 a century later. The introduction of the ship mill
Ship mill
The ship-mill grinder today is a rare type of watermill. Its first recorded use dates back to mid-6th century AD Italy.- Technology :...

  and tide mill
Tide mill
A tide mill is a water mill driven by tidal rise and fall. A dam with a sluice is created across a suitable tidal inlet, or a section of river estuary is made into a reservoir. As the tide comes in, it enters the mill pond through a one way gate, and this gate closes automatically when the tide...

 in the 6th century, both of which yet unattested for the ancient period, allowed for a flexible response to the changing water-level of rivers and the Atlantic Ocean
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

, thus demonstrating the technological innovativeness of early medieval watermillers.

Earliest evidence

Below the earliest medieval evidence for different types of watermills. This list complements its ancient counterpart.
Date Water-powered mill types Find spot (or reference) Location
537 Ship mill
Ship mill
The ship-mill grinder today is a rare type of watermill. Its first recorded use dates back to mid-6th century AD Italy.- Technology :...

 
Procop
Procopius
Procopius of Caesarea was a prominent Byzantine scholar from Palestine. Accompanying the general Belisarius in the wars of the Emperor Justinian I, he became the principal historian of the 6th century, writing the Wars of Justinian, the Buildings of Justinian and the celebrated Secret History...

 V (=Goth. I), 19.19–22
Rome
Rome
Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

6th cent. Sawmill
Sawmill
A sawmill is a facility where logs are cut into boards.-Sawmill process:A sawmill's basic operation is much like those of hundreds of years ago; a log enters on one end and dimensional lumber exits on the other end....

; crank
Crank (mechanism)
A crank is an arm attached at right angles to a rotating shaft by which reciprocating motion is imparted to or received from the shaft. It is used to change circular into reciprocating motion, or reciprocating into circular motion. The arm may be a bent portion of the shaft, or a separate arm...

 and connecting rod
Connecting rod
In a reciprocating piston engine, the connecting rod or conrod connects the piston to the crank or crankshaft. Together with the crank, they form a simple mechanism that converts linear motion into rotating motion....

 system without gear
Gear
A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque. Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine....

 train
Gerasa and Ephesus
Ephesus
Ephesus was an ancient Greek city, and later a major Roman city, on the west coast of Asia Minor, near present-day Selçuk, Izmir Province, Turkey. It was one of the twelve cities of the Ionian League during the Classical Greek era...

 
Jordan
Jordan
Jordan , officially the Hashemite Kingdom of Jordan , Al-Mamlaka al-Urduniyya al-Hashemiyya) is a kingdom on the East Bank of the River Jordan. The country borders Saudi Arabia to the east and south-east, Iraq to the north-east, Syria to the north and the West Bank and Israel to the west, sharing...

 and Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

6th cent. Vertical-wheeled tide mill Killoteran near Waterford
Waterford
Waterford is a city in the South-East Region of Ireland. It is the oldest city in the country and fifth largest by population. Waterford City Council is the local government authority for the city and its immediate hinterland...

Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 630 Horizontal-wheeled tide mill
Tide mill
A tide mill is a water mill driven by tidal rise and fall. A dam with a sluice is created across a suitable tidal inlet, or a section of river estuary is made into a reservoir. As the tide comes in, it enters the mill pond through a one way gate, and this gate closes automatically when the tide...

 
Little Island
Little Island, Cork
Little Island is mainly an industrial area to the east of Cork City, Ireland. It is no longer an island, since the northern channel separating it from the mainland has filled over. To the east and south is Cork Harbour; across a channel to the west is Fota Island.-Development:Many of Cork's...

 I
Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 636 Horizontal-wheeled mill (Norse or Greek mill) Ballykilleen Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...


Written sources

In the following, literary, epigraphical and documentary sources referring to watermills and other water-driven machines are listed.
Reference Location Date Type of evidence Comments on
Annals of Ulster
Annals of Ulster
The Annals of Ulster are annals of medieval Ireland. The entries span the years between AD 431 to AD 1540. The entries up to AD 1489 were compiled in the late 15th century by the scribe Ruaidhrí Ó Luinín, under his patron Cathal Óg Mac Maghnusa on the island of Belle Isle on Lough Erne in the...

 
650 Annal
Benedict of Nursia
Benedict of Nursia
Saint Benedict of Nursia is a Christian saint, honored by the Roman Catholic Church as the patron saint of Europe and students.Benedict founded twelve communities for monks at Subiaco, about to the east of Rome, before moving to Monte Cassino in the mountains of southern Italy. There is no...

, Regula 66.6–7
529/547 Possible watermill
Caesarius of Arles, Sermones, VIII, 4 Early 6th cent.
Cassiodorus
Cassiodorus
Flavius Magnus Aurelius Cassiodorus Senator , commonly known as Cassiodorus, was a Roman statesman and writer, serving in the administration of Theodoric the Great, king of the Ostrogoths. Senator was part of his surname, not his rank.- Life :Cassiodorus was born at Scylletium, near Catanzaro in...

, Variae III, 31.2
510/511
Charter of king Childebert I
Childebert I
Childebert I was the Frankish king of Paris, a Merovingian dynast, one of the four sons of Clovis I who shared the kingdom of the Franks upon their father's death in 511...

 
Paris
Paris
Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

556 Charter Ship mill
Charter of king Dagobert II
Dagobert II
Dagobert II was the king of Austrasia , the son of Sigebert III and Chimnechild of Burgundy. The Feast Date of St Dagobert II is 23 December -Biography:...

 
Trier
Trier
Trier, historically called in English Treves is a city in Germany on the banks of the Moselle. It is the oldest city in Germany, founded in or before 16 BC....

646 Charter
Charter of king Ethelbert of Kent  762 Charter
Edictus Rothari 149–151 643 Legal code
Gregorius Turonensis
Gregory of Tours
Saint Gregory of Tours was a Gallo-Roman historian and Bishop of Tours, which made him a leading prelate of Gaul. He was born Georgius Florentius, later adding the name Gregorius in honour of his maternal great-grandfather...

, Historia Francorum III, 19
Dijon
Dijon
Dijon is a city in eastern France, the capital of the Côte-d'Or département and of the Burgundy region.Dijon is the historical capital of the region of Burgundy. Population : 151,576 within the city limits; 250,516 for the greater Dijon area....

c. 575 Historiography Ship mill
Gregorius Turonensis
Gregory of Tours
Saint Gregory of Tours was a Gallo-Roman historian and Bishop of Tours, which made him a leading prelate of Gaul. He was born Georgius Florentius, later adding the name Gregorius in honour of his maternal great-grandfather...

, Vitae Patrum, XVIII, 2
484/507 Hagiography
Lex Alamannorum
Lex Alamannorum
The terms Lex Alamannorum and Pactus Alamannorum refer to two early medieval law codes of the Alamanni. They were first edited in parts in 1530 by Johannes Sichard in Basel.-Pactus Alamannorum:...

, 79–80
717/719 Legal code
Lex Baivariorum, IX, 2 Probably 725/728 Legal code
Lex Visigothorum, VII, 2.12 and VIII, 4.30 568/586 Legal code
Marius Aventicius
Marius Aventicensis
Marius Aventicensis or, popularly, Marius of Avenches was the Bishop of Aventicum from 574, remembered for his terse chronicle...

, Chronica
Geneva
Geneva
Geneva In the national languages of Switzerland the city is known as Genf , Ginevra and Genevra is the second-most-populous city in Switzerland and is the most populous city of Romandie, the French-speaking part of Switzerland...

563 Annal Ship mill
Nomos georgikós 81–82 Late 7th cent. Legal code
Pactus Alamannorum, V, 14 Early 7th cent. Legal code
Pactus legis Salicae, Recensio Guntchramna, X, 6; XII, 1–3; XXXI, 3 567/596 Legal code
Procop
Procopius
Procopius of Caesarea was a prominent Byzantine scholar from Palestine. Accompanying the general Belisarius in the wars of the Emperor Justinian I, he became the principal historian of the 6th century, writing the Wars of Justinian, the Buildings of Justinian and the celebrated Secret History...

 V (=Goth. I), 19.19–22
Rome
Rome
Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

537 Historiography Ship mills
Senchus Mòr, De ceithri slichtaib Athgabála c. 600 Legal code
Venantius Fortunatus
Venantius Fortunatus
Venantius Honorius Clementianus Fortunatus was a Latin poet and hymnodist in the Merovingian Court, and a Bishop of the early Catholic Church. He was never canonised but was venerated as Saint Venantius Fortunatus during the Middle Ages.-Life:Venantius Fortunatus was born between 530 and 540 A.D....

, Carmina, III, 12, 37–8
c. 600
Vita Leoba
Leoba
Leoba was an Anglo-Saxon nun who was part of Boniface's mission to the Germans, and a saint.- Early life :...

e, 12
c. 740 Hagiography
Vita S. Orienti
Orientius
- Biography and work :He wrote the elegiac poem Commonitorium of 1036 verses describing the way to heaven, with warnings against its hindrances...

, II, 3
c. 380/420? Hagiography
Vita S. Brigidae virginis, cols. 787–8 Migne c. 650 Hagiography
Vita S. Remigi episcopi Remensis, 17 486/511 Hagiography

Watermill sites

Below are listed excavated or surveyed watermill sites dated to the early medieval period.
Site Country Date Remains
Ebbsfleet
Ebbsfleet, Thanet
Ebbsfleet is a hamlet near Ramsgate, Kent, at the head of Pegwell Bay. Historically it was a peninsula on the south coast of the Isle of Thanet, marking the eastern end of the Wantsum Channel that separated Thanet from the rest of Kent....

 
England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

Early 8th cent. Horizontal-wheeled tide mill
Old Windsor
Old Windsor
Old Windsor is a large village and civil parish in the Royal Borough of Windsor and Maidenhead in the English county of Berkshire.-Location:...

 I
England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

Probably late 7th cent. Mill-channel, woodwork of three vertical water-wheels
Old Windsor
Old Windsor
Old Windsor is a large village and civil parish in the Royal Borough of Windsor and Maidenhead in the English county of Berkshire.-Location:...

 II
England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

9th or 10th cent. Mill-channel, horizontal-wheeled mill
Tamworth
Tamworth
Tamworth is a town and local government district in Staffordshire, England, located north-east of Birmingham city centre and north-west of London. The town takes its name from the River Tame, which flows through the town, as does the River Anker...

 
England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

Between 846 and 864 Entire establishment
Dasing
Dasing
Dasing is a municipality in the district of Aichach-Friedberg in Bavaria in Germany....

 
Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

696/697 Vertical-wheeled undershot or breastshot mill, mill-pond, mill-race, fragments of mill-stones
Ballykilleen Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 636 Horizontal-wheeled mill
Cloontycarthy Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 833 Entire establishment
Drumard Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 782 Horizontal-wheeled mill
Killoteran near Waterford
Waterford
Waterford is a city in the South-East Region of Ireland. It is the oldest city in the country and fifth largest by population. Waterford City Council is the local government authority for the city and its immediate hinterland...

 
Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

6th cent. Vertical-wheeled tide mill
Little Island
Little Island, Cork
Little Island is mainly an industrial area to the east of Cork City, Ireland. It is no longer an island, since the northern channel separating it from the mainland has filled over. To the east and south is Cork Harbour; across a channel to the west is Fota Island.-Development:Many of Cork's...

 I
Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 630 Horizontal-wheeled tide mill
Little Island
Little Island, Cork
Little Island is mainly an industrial area to the east of Cork City, Ireland. It is no longer an island, since the northern channel separating it from the mainland has filled over. To the east and south is Cork Harbour; across a channel to the west is Fota Island.-Development:Many of Cork's...

 II
Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

7th cent. Vertical-wheeled tide mill
Morett Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

c. 710 Vertical-wheeled undershot mill
Gerasa  Jordan
Jordan
Jordan , officially the Hashemite Kingdom of Jordan , Al-Mamlaka al-Urduniyya al-Hashemiyya) is a kingdom on the East Bank of the River Jordan. The country borders Saudi Arabia to the east and south-east, Iraq to the north-east, Syria to the north and the West Bank and Israel to the west, sharing...

6th cent. Sawmill; crank and connecting rod system without gear train
Nendrum Monastery mill
Nendrum Monastery mill
The Nendrum Monastery mill was a tide mill on an island in Strangford Lough in Northern Ireland. It is the earliest excavated tide mill, dating from 787. Its millstones are 830mm in diameter and the horizontal wheel is estimated to have developed 7/8HP at its peak. Remains of an earlier mill dated...

 
Northern Ireland
Northern Ireland
Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

619 & 789 Horizontal-wheeled tide mill
Ephesus
Ephesus
Ephesus was an ancient Greek city, and later a major Roman city, on the west coast of Asia Minor, near present-day Selçuk, Izmir Province, Turkey. It was one of the twelve cities of the Ionian League during the Classical Greek era...

 
Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

6th cent. Sawmill; crank and connecting rod system without gear train; multiple mill complex with at least five watermills

Millstones

The following list comprises stray finds of early medieval millstones. Note that there is no way to distinguish millstones driven by water-power from those powered by animals turning a capstan
Capstan
Capstan may refer to:*Capstan , a rotating machine used to control or apply force to another element*Capstan , rotating spindles used to move recording tape through the mechanism of a tape recorder...

. Most, however, are assumed to derive from watermills.
Site Country Date Remains
Stroud
Stroud, Gloucestershire
Stroud is a market town and civil parish in the county of Gloucestershire, England. It is the main town in Stroud District.Situated below the western escarpment of the Cotswold Hills at the meeting point of the Five Valleys, the town is noted for its steep streets and cafe culture...

 
England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

Probably Anglo-Saxon
Anglo-Saxon
Anglo-Saxon may refer to:* Anglo-Saxons, a group that invaded Britain** Old English, their language** Anglo-Saxon England, their history, one of various ships* White Anglo-Saxon Protestant, an ethnicity* Anglo-Saxon economy, modern macroeconomic term...

Mill-paddles from horizontal wheel
Moycraig Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

9th cent. Horizontal paddle-wheel, hub and shaft, complete with pebble bearing

External links

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