Edmund of Langley, 1st Duke of York -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 of the Royal couple who lived to adulthood.
Edmund of Langley, 1st Duke of York -LRB- 5 June 1341 -- 1 August 1402 -RRB- was a younger son of King Edward III of England and Philippa of Hainault.