The boy's father Owain ap Marededd ap Tudur’s origins, are somewhat vague, he is said to have arrived at the court of Henry V in 1415, but at some point he was under the command of the Welsh warrior Dafydd Gam, the maternal grandfather of the Vaughan's of Tretower and a staunch opponent of Owain Glyndwr. Tudor’s affair with Catherine of Valois had been conducted away from court and resulted in a number of other children, besides Edmund and Jasper. The twenty or so years that covered the Tudor sons adolescence under the control of the aforementioned Katherine de la Pole, appears to be have been unremarkable and prior to them being formally recognised as the Henry VI’s legitimate uterine brothers in 1452 and their ennoblement as earls of Richmond and Pembroke, their ‘Welshness’ can be called into question, Edmund, it seems, had no connection with the Welsh until after his marriage to the teenage Margaret Beaufort in 1452, and neither did Jasper until he moved into Pembroke Castle and took up Lancaster's cause.
However, Tudor was not destined to see his only child, he was dead of the plague by the end of this day in 1456.