At some point Edward received an estate from King Stephen. This estate with Réka Castle in the middle is called "Terra Britanorum de Nadasd"; it was likely bestowed upon Edward's marriage to Agatha, who is believed to be a kinswoman of the king or the queen. This brings the date of their marriage into question, however: most sources date it 1040 to 1045 but Stephen I died August 1038. Réka Castle is considered to be the birthplace of their daughter Margaret, and likely their other children were born there as well, as the family lived there until being summoned to England.