His father was loyal to the
House of Lancaster. His wife, Maud Herbert, had in fact been first betrothed to Henry of Richmond, who would claim and win the throne in 1485, becoming Henry VII. His father was killed in the
Battle of Towton on 29 March 1461. The earldom of Northumberland was forfeited to the victorious Yorkists. The
adolescent Percy was imprisoned in the
Fleet Prison. He was transported to the
Tower of London in 1464. In 1465,
John Neville was named
Earl of Northumberland in his place. Percy eventually swore fealty to Edward IV and was released in 1469. He petitioned for the return of his paternal titles and estates to him. He gained support from Edward IV himself. John Neville had to quit his title and was instead named
Marquess of Montagu in 1470. However, the restoration of the title to Percy was delayed by the
Parliament of England until 1473. He was made a
Knight of the Garter in 1474 by Edward IV. For the following twelve years, Percy held many of the important government posts in northern England, such as
warden of the east and middle marches, which were traditional in his family. ==Bosworth campaign and aftermath==