Edmund of Langley, 1st Duke of York, 1st Earl of Cambridge, KG -LRB- 5 June 1341 -- 1 August 1402 -RRB- was a younger son of King Edward III of England and Philippa of Hainault, the fourth of the five sons who lived to adulthood, of this Royal couple.
Edmund of Langley, 1st Duke of York -LRB- 5 June 1341 â '' 1 August 1402 -RRB- was a younger son of King Edward III of England and Philippa of Hainault.