Edmund, Earl of Rutland was the fourth child and second surviving son of Richard Plantagenet, 3rd Duke of York, and Cecily Neville. He was born in Rouen. At the time Rouen was the capital of English-occupied France and his father held the office of Lieutenant of France. He was killed at the age of 17 either during or shortly after the Battle of Wakefield, during the Wars of the Roses. He was created Earl of Rutland by Henry VI probably some time before 1454. No record of the creation has been preserved; Edmund and his older brother Edward, then the Earl of March, signed a letter to their father on 14 June 1454 as "E. Rutland" and "E. Marche".
Edmund died at the age of seventeen either during or shortly after the Battle of Wakefield during the Wars of the Roses. He had fought in the battle at the side of his father. After the tide of battle turned against his father he attempted to escape over Wakefield Bridge, but was overtaken and killed, possibly by the Lancastrian Lord Clifford, to avenge Clifford's father's death at the St. Albans. By the account given by Roderick O'Flanagan in his 1870 biography of Edmund:
Urged by his tutor, a priest named Robert Aspell, he was no sooner aware that the field was lost than he sought safety by flight. Their movements were intercepted by the Lancastrians, and Lord Clifford made him prisoner, but did not then know his rank. Struck with the richness of his armour and equipment, Lord Clifford demanded his name. "Save him", implored the Chaplain; "for he is the Prince's son, and peradventure may do you good hereafter."
This was an impolitic appeal, for it denoted hopes of the House of York being again in the ascendant, which the Lancastrians, flushed with recent victory, regarded as impossible. The ruthless noble swore a solemn oath: "Thy father", said he, "slew mine; and so will I do thee and all thy kin;" and with these words he rushed on the hapless youth, and drove his dagger to the hilt in his heart. Thus fell, at the early age of seventeen, Edmund Plantagenet, Earl of Rutland, Lord Chancellor of Ireland.
However this story does not appear in any of the accounts of the battle written by the chroniclers of the time. Edmund was possibly executed on the orders of the Lancastrian Lord Clifford, or by some accounts, by Lord Clifford himself. His head was displayed on the gates of York along with those of his father and of his uncle, Richard Neville, 5th Earl of Salisbury. . Pennsylvania Academy of the Fine Arts. In Shakespeare's play, Henry VI, Part 3, Rutland is portrayed as a young boy who is brutally murdered by Clifford after pleading for his life; the source appears to be Hall's 1548 history, which says, incorrectly, that Rutland is "scarce of the age of twelve years" at his death. Edmund and his father were buried at Pontefract Priory. The bodies were reburied, with great pomp, in the family vault at Fotheringhay Castle on 29–30 July 1476. Lord Clifford would himself be slain in March 1461 at the Battle of Ferrybridge.