[2] He had a sister, Maud Clifford, who married firstly, John Neville, 6th Baron Latimer, and secondly, Richard of Conisburgh, 3rd Earl of Cambridge.

[3] At his father's death on 18 August 1391, Clifford, then aged about three, inherited the title and the position of hereditary High Sheriff of Westmorland.

[4] He took part in a great tournament at Carlisle between six English and six Scottish knights, and in the war in France.

[4] He was a legatee in the will of his cousin, Henry V.[3] He was killed at the Siege of Meaux on 13 March 1422,[4] and is said to have been buried at Bolton Priory.

Philippa was the daughter of Lady Elizabeth de Burgh and Lionel of Antwerp, son of King Edward III.