Henry Percy, 1st Earl of Northumberland

Henry Percy
Earl of Northumberland and King of Mann
Engraving, 18th-century
Born10 November 1341
Alnwick, Northumberland, England
Died20 February 1408(1408-02-20) (aged 66)
Bramham Moor, Yorkshire, England
Noble familyPercy
Spouses
  • Margaret Neville
  • Maud Lucy
IssueHarry "Hotspur" Percy
Sir Thomas Percy
Sir Ralph Percy
Alan Percy
Margaret Percy
FatherHenry de Percy, 3rd Baron Percy
MotherMary of Lancaster

Henry Percy, 1st Earl of Northumberland, 4th Baron Percy, titular King of Mann, KG, Lord Marshal (10 November 1341 – 20 February 1408), was an English statesman and a leading political figure during the reigns of Richard II and Henry IV. One of the most powerful noblemen in northern England, he played a decisive role in the deposition of Richard II and the accession of Henry IV.

He was the son of Henry de Percy, 3rd Baron Percy, and a descendant of Henry III of England. His mother was Mary of Lancaster, daughter of Henry, 3rd Earl of Lancaster, son of Edmund, Earl of Leicester and Lancaster, who in turn was the son of Henry III.