In accordance with the marriage arrangements, Richard inherited the lands and wealth of the Mowbray family. He was also made Duke of Norfolk. However, upon the death of Edward IV, the throne was offered to Edward's brother, Richard III. After Prince Richard was lodged in June 1483 to the Tower of London, where his elder brother (briefly Edward V) was too, both Richard and Edward were declared illegitimate. They subsequently disappeared, and the titles of both York and Norfolk were forfeited to the crown.