Original: Edmund of Langley, 1st Duke of York (5 June 1341   1 August 1402) 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.
Simplified: Edmund of Langley, 1st Duke of York (5 June 1341 – 1 August 1402) was a younger son of King Edward III of England and Philippa of Hainault.