Sidney Arthur Robin George Drogo Montagu, 11th Duke of Manchester, etc. (Kimbolton Castle

Kimbolton Castle

Kimbolton Castle in Kimbolton, Cambridgeshire, is best known as the final home of King Henry VIII's first queen, Catherine of Aragon. Originally a medieval castle but converted into a stately palace, it was the family seat of the Dukes of Manchester from 1615 until 1950...

, Huntingdonshire

Huntingdonshire

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

, 5 February 1929 – 3 June 1985) was a British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 hereditary peer

Hereditary peer

Hereditary peers form part of the Peerage in the United Kingdom. There are over seven hundred peers who hold titles that may be inherited. Formerly, most of them were entitled to sit in the House of Lords, but since the House of Lords Act 1999 only ninety-two are permitted to do so...

, the son of the 10th Duke of Manchester

Alexander Montagu, 10th Duke of Manchester

Alexander George Francis Drogo Montagu, 10th Duke of Manchester OBE was a Royal Navy officer and British hereditary peer...

 and the elder brother of the 12th Duke

Angus Montagu, 12th Duke of Manchester

Angus Charles Drogo Montagu, 12th Duke of Manchester, etc. , was a British hereditary peer, the son of the 10th Duke of Manchester, and the younger brother of the 11th Duke....

.

He married firstly on 5 February 1955 Adrienne Valerie Christie (divorced 1977/1978) (d. 1988), daughter of Commander

Commander

Commander is a naval rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the armed forces, particularly in police and law enforcement.-Commander as a naval...

 John Kenneth Christie of Sedgefield

Sedgefield, Western Cape

Sedgefield is a coastal town on the Garden Route in the Western Cape province of South Africa. It is situated on the N2 national road, between George and Knysna...

, Cape Province

Cape Province

The Province of the Cape of Good Hope was a province in the Union of South Africa and subsequently the Republic of South Africa...

 (now in Western Cape

Western Cape

The Western Cape is a province in the south west of South Africa. The capital is Cape Town. Prior to 1994, the region that now forms the Western Cape was part of the much larger Cape Province...

), South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

.

He married secondly on 25 August 1978 Andrea Joss, daughter of Cecil Alexander Joss of Johannesburg

Johannesburg

Johannesburg also known as Jozi, Jo'burg or Egoli, is the largest city in South Africa, by population. Johannesburg is the provincial capital of Gauteng, the wealthiest province in South Africa, having the largest economy of any metropolitan region in Sub-Saharan Africa...

, South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

, (d. 21 January 1996) who had previously been married twice, to Major

Major

Major is a rank of commissioned officer, with corresponding ranks existing in almost every military in the world.When used unhyphenated, in conjunction with no other indicator of rank, the term refers to the rank just senior to that of an Army captain and just below the rank of lieutenant colonel. ...

S. Whitehead and to G. J. W. Kent.

He had no issue from either marriage.