Sir Gervase Clifton was a 15th century English knight and landowner.

He was a junior member of the Clifton family

Clifton Baronets

Two unrelated Baronetcies have been created in the surname of Clifton.The Clifton Baronetcy, of Clifton in the County of Nottinghamshire, was created in the Baronetage of England on 22 May 1611 for Sir Gervas Clifton, of Clifton Hall, Nottingham...

 of Nottinghamshire and possibly a younger son of Sir Gervase Clifton (died 1453).

He served as Lieutenant of Dover Castle

Dover Castle

Dover Castle is a medieval castle in the town of the same name in the English county of Kent. It was founded in the 12th century and has been described as the "Key to England" due to its defensive significance throughout history...

  and as Captain of Pontoise, France where he was knighted. He came into an estate at Bradbourne, Kent by his marriage to heiress Isabel Herbert. He was Mayor of Canterbury

Canterbury

Canterbury is a historic English cathedral city, which lies at the heart of the City of Canterbury, a district of Kent in South East England. It lies on the River Stour....

 in 1450, served as High Sheriff of Kent

High Sheriff of Kent

The High Sheriff is the oldest secular office under the Crown. Formerly the High Sheriff was the principal law enforcement officer in the county but over the centuries most of the responsibilities associated with the post have been transferred elsewhere or are now defunct, so that its functions...

 1439,1450 and 1458 and represented Kent

Kent (UK Parliament constituency)

Kent was a parliamentary constituency covering the county of Kent in southeast England. It returned two "knights of the shire" to the House of Commons by the bloc vote system from the year 1290...

 in the Parliament of 1455.

He was briefly Treasurer of the Household of Henry VI

Henry VI of England

Henry VI was King of England from 1422 to 1461 and again from 1470 to 1471, and disputed King of France from 1422 to 1453. Until 1437, his realm was governed by regents. Contemporaneous accounts described him as peaceful and pious, not suited for the violent dynastic civil wars, known as the Wars...

 and Treasurer of Calais

Treasurer of Calais

Calais was in English hands from 1347 to 1558. The task of the Treasurer, in conjunction with the Captain of Calais was keeping the defences in order, supplying victuals and paying the garrison...

 1450–60.

He was declared a traitor for his support of Margaret of Anjou

Margaret of Anjou

Margaret of Anjou was the wife of King Henry VI of England. As such, she was Queen consort of England from 1445 to 1461 and again from 1470 to 1471; and Queen consort of France from 1445 to 1453...

. He took part in and was captured at the Battle of Tewkesbury

Battle of Tewkesbury

The Battle of Tewkesbury, which took place on 4 May 1471, was one of the decisive battles of the Wars of the Roses. The forces loyal to the House of Lancaster were completely defeated by those of the rival House of York under their monarch, King Edward IV...

 during the Wars of the Roses

Wars of the Roses

The Wars of the Roses were a series of dynastic civil wars for the throne of England fought between supporters of two rival branches of the royal House of Plantagenet: the houses of Lancaster and York...

and was beheaded in Tewkesbury market place along with other Lancastrian leaders on 6 May 1471.