William de Clinton, 1st Earl of Huntingdon

William de Clinton, 1st Earl of Huntingdon (c.1304 – 31 October 1354) and Lord High Admiral, was the younger son of John de Clinton, 1st Baron Clinton (d.1312/13) of Maxstoke Castle, Warwickshire, and Ida de Odingsells, the granddaughter of Ida II Longespee.

[2] William de Clinton was a boyhood companion of Edward III of England, and one of the king's followers who secretly entered Nottingham Castle and captured Roger Mortimer, 1st Earl of March.

The arrest and subsequent execution of Mortimer cleared the way for the adolescent Edward III to assume power.

On 16 March 1337, Edward III created William de Clinton Earl of Huntingdon.

William de Clinton died in 1354, leaving an only daughter, Elizabeth, whose legitimacy is doubtful.

Arms of de Clinton: Argent, six crosses crosslet fitchée sable three two and one on a chief azure two mullets or pierced gules
SIGILLUM W(I)LLELMI DE CLINTUN ("seal of William de Clinton"). Drawing of seal appended to charter recording award dated 19 July 1347 of a court of honour, of which Clinton was a juror, convened before the Siege of Calais in the matter of Warbelton v. Gorges . MS Ashmole 1137, f.144, Bodleian Library, Oxford