Henry was some 35 years older than his bride, who was about 18 when they married. He already had children, though no surviving son, from his first marriage to Matilda of Scotland, as well as several illegitimate ones. As his second marriage produced no children, the decision was made to leave the throne to his daughter, the Empress Matilda; an oath was sworn by the clergy, members of the royal family, including Adeliza, as well as English nobles to recognise Matilda as Henry's heir upon his death. After his death Adeliza spent three years based in a convent, then married again and had seven children by William d'Aubigny, 1st Earl of Arundel. But a year before her death at the age of forty-eight she left her husband to move to the Affligem Abbey in Brabant, where she died in 1151.