Descent from Edward III
Edmund of Langley, 1st Duke of York, 1st Earl of Cambridge, KG (5 June 1341 – 1 August 1402) was a younger son of King Edward III of England and Philippa of Hainault, the fourth of their five sons who lived to adulthood. He was the founder of the House of York, but it was through the marriage of his younger son, Richard to Anne Mortimer that the Yorkist faction in the Wars of the Roses made its claim on the throne. The other party in the Wars of the Roses, the Lancasters, were descendants of Edmund's elder brother, John of Gaunt whose son Henry usurped the throne of Richard II in 1399.
Edmund had two sons, Edward, and Richard of Conisburgh. Edward succeeded to the dukedom in 1402, but was killed at the battle of Agincourt in 1415, with no issue. Richard married Anne Mortimer, a great-granddaughter of Lionel of Antwerp, the second surviving son (cadet line) of Edward III. Furthermore, Anne's son Richard also became heir general to the earldom of March, after her only brother, Edmund, 5th Earl, died without issue in 1425. Their father Roger Mortimer, 4th Earl of March had been named heir presumptive of Richard II before Henry IV's accession; although it had been passed over at the time, Anne's son Richard also inherited this claim to the throne.
Richard of Conisburgh was executed following his involvement in the Southampton Plot to depose Henry V of England in favour of the Earl of March. The dukedom of York therefore passed to his son, Richard Plantagenet. Through his mother, Richard Plantagenet also inherited the lands of the earldom of March, as well as the Mortimer claim to the throne.
|House of York family tree