Succession to the British throne branch of the royal house of Lancaster, the House of Beaufort, assumed the English crown as Henry VII, after defeating Richard III, who was killed at the battle of Bosworth when leading a charge against Henry's standard. Richard was the last king of the House of York, and the last of the Plantagenet dynasty. Henry declared himself king retroactively from 21 August 1485, the day before his victory over Richard at Bosworth Field, and caused Richard's "Titulus Regius" to be repealed and expunged from the Rolls of Parliament. After Henry's coronation in London in October that year, his first parliament,
House of York who now rallied behind Henry Tudor, a descendant of the Beauforts, a legitimized branch of the House of Lancaster. Moreover, the family of Edward IV, and the Edwardian loyalists, were naturally opposed to him, essentially dividing his Yorkist power base. A coup attempt failed in late 1483, but in 1485 Richard met Henry Tudor at the battle of Bosworth Field. During the battle, some of Richard's important supporters switched sides or withheld their retainers from the field. Richard himself was killed. He was the last of the Plantagenet kings, as well as the last English king to die in battle.