However, Mary refused to accept Andrew´s right to the crown, because in her view his father Stephen the Posthumous had been a bastard, and thus not a legitimate member of the House of Árpád (the royal family of Hungary).
Mary did not accept Andrew's claim to the throne due to her belief that his father, Stephen the Posthumous, was an illegitimate son and therefore not part of the legitimate House of Árpád (the royal family of Hungary).