Sir William Fyncheden KS (died 1374) was a British justice. He was first recorded as a lawyer in 1350, and the same year was made a Commissioner of embankments in Yorkshire

Yorkshire

Yorkshire is a historic county of northern England and the largest in the United Kingdom. Because of its great size in comparison to other English counties, functions have been increasingly undertaken over time by its subdivisions, which have also been subject to periodic reform...

. From then on he was a regular appointee to commissions of Oyer and terminer

Oyer and terminer

In English law, Oyer and terminer was the Law French name, meaning "to hear and determine", for one of the commissions by which a judge of assize sat...

, mostly in Yorkshire but also in Derbyshire

Derbyshire

Derbyshire is a county in the East Midlands of England. A substantial portion of the Peak District National Park lies within Derbyshire. The northern part of Derbyshire overlaps with the Pennines, a famous chain of hills and mountains. The county contains within its boundary of approx...

, Nottinghamshire

Nottinghamshire

Nottinghamshire is a county in the East Midlands of England, bordering South Yorkshire to the north-west, Lincolnshire to the east, Leicestershire to the south, and Derbyshire to the west...

 and Lincolnshire

Lincolnshire

Lincolnshire is a county in the east of England. It borders Norfolk to the south east, Cambridgeshire to the south, Rutland to the south west, Leicestershire and Nottinghamshire to the west, South Yorkshire to the north west, and the East Riding of Yorkshire to the north. It also borders...

; he was also appointed as a Justice of Labourers several times in both Yorkshire and Nottinghamshire. In February 1355 he was appointed to investigate unauthorised Alienation

Alienation (property law)

Alienation, in property law, is the capacity for a piece of property or a property right to be sold or otherwise transferred from one party to another. Although property is generally deemed to be alienable, it may be subject to restraints on alienation....

 of royal lands in 6 counties, including Nottinghamshire and Derbyshire. In 1359 he investigated trespasses against the royal family and their tenants in Richmondshire, and in 1360 he was tasked with the inquiry as to whether the lands of Roger Mortimer were being held by the King or as part of Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

, to which he found the latter. In 1362 he was made a King's Serjeant.

His career continued to develop in the 1360s, with commissions of Oyer and terminer in Sussex

Sussex

Sussex , from the Old English Sūþsēaxe , is an historic county in South East England corresponding roughly in area to the ancient Kingdom of Sussex. It is bounded on the north by Surrey, east by Kent, south by the English Channel, and west by Hampshire, and is divided for local government into West...

, Huntingdonshire

Huntingdonshire

Huntingdonshire is a local government district of Cambridgeshire, covering the area around Huntingdon. Traditionally it is a county in its own right...

, Cambridgeshire

Cambridgeshire

Cambridgeshire is a county in England, bordering Lincolnshire to the north, Norfolk to the northeast, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west...

, Kent

Kent

Kent is a county in southeast England, and is one of the home counties. It borders East Sussex, Surrey and Greater London and has a defined boundary with Essex in the middle of the Thames Estuary. The ceremonial county boundaries of Kent include the shire county of Kent and the unitary borough of...

 and Gloucestershire

Gloucestershire

Gloucestershire is a county in South West England. The county comprises part of the Cotswold Hills, part of the flat fertile valley of the River Severn, and the entire Forest of Dean....

. In 1365 he was made a Justice

Justice of the Common Pleas

Justice of the Common Pleas was a puisne judicial position within the Court of Common Pleas of England and Wales, under the Chief Justice. The Common Pleas was the primary court of common law within England and Wales, dealing with "common" pleas...

 of the Common Pleas

Court of Common Pleas (England)

The Court of Common Pleas, or Common Bench, was a common law court in the English legal system that covered "common pleas"; actions between subject and subject, which did not concern the king. Created in the late 12th to early 13th century after splitting from the Exchequer of Pleas, the Common...

 and knighted. He attended Parliament in 1366 as a Trier of petitions, a position he maintained at the Parliaments of 1368, 1369, 1371 and 1373, and at the same time he also acted as an Assize justice, mainly in the Home counties

Home Counties

The home counties is a term which refers to the counties of South East England and the East of England which border London, but do not include the capital city itself...

 and West Midlands

West Midlands (region)

The West Midlands is an official region of England, covering the western half of the area traditionally known as the Midlands. It contains the second most populous British city, Birmingham, and the larger West Midlands conurbation, which includes the city of Wolverhampton and large towns of Dudley,...

. On April 14 1371 he was appointed Chief Justice of the Common Pleas

Chief Justice of the Common Pleas

The Court of Common Pleas, also known as the Common Bench or Common Place, was the second highest common law court in the English legal system until 1880, when it was dissolved. As such, the Chief Justice of the Common Pleas was one of the highest judicial officials in England, behind only the Lord...

after the previous holder was made Lord Chancellor; Fyncheden then died in 1374 after a relatively brief tenure as Chief Justice.