Henry VII of England Margaret Beaufort, Countess of Richmond. His father, Edmund Tudor, 1st Earl of Richmond, died three months before his birth. Henry's paternal grandfather, Owen Tudor, originally from the Tudors of Penmynydd, Isle of Anglesey in Wales, had been a page in the court of Henry V. He rose to become one of the "Squires to the Body to the King" after military service at the Battle of Agincourt. Owen is said to have secretly married the widow of Henry V, Catherine of Valois. One of their sons was Edmund Tudor, father of Henry VII. Edmund was created Earl of Richmond in
Wars of the Roses revolt aimed at installing the Lancastrian Henry Tudor. It has been argued that his supporting Tudor rather than either Edward V or his younger brother, showed Buckingham was aware that both were already dead. The Lancastrian claim to the throne had descended to Henry Tudor on the death of Henry VI and his son in 1471. Henry's father, Edmund Tudor, 1st Earl of Richmond, had been a half-brother of Henry VI, but Henry's claim to royalty was through his mother, Margaret Beaufort. She was descended from John Beaufort, who was a son of John of Gaunt and thus a grandson