Both Henry and Margaret were great-grandchildren of
John of Gaunt and
Katherine Swynford and early in the
Wars of the Roses they both supported the Lancastrian cause. Henry fought on the Lancastrian side at the
Battle of Towton on 29 March 1461. This is said to have been in celebration of the marriage of Henry's nephew,
Henry Stafford, 2nd Duke of Buckingham, to
Catherine Woodville, sister of the
queen consort. The substantial manor house, known variously as Woking Old Hall became the principal residence of Henry and Margaret and its position allowed Henry to enter more into political life. In the autumn of 1470,
Warwick and
Clarence returned to England and King Edward was forced to flee into exile. Henry Stafford was arrested, but was soon released following a petition from his wife. In March 1471 Edward IV landed with a small army. The leading Lancastrian commander, the
Duke of Somerset, visited Henry and Margaret, his first cousin, at Woking in an attempt to persuade Henry to join the Lancastrian army which was being mustered. Henry was reluctant to commit himself, and adopted delaying tactics. However, on 12 April he made a firm decision to support Edward and to join him, accompanied by his Steward, John Gilpyn, and other retainers. Although ill-prepared, Henry and his men travelled to
Barnet, where the Yorkists won a decisive victory on 14 April 1471. The previous day Henry had made a hastily drafted will, in which he referred to Margaret as "". ==Illness==