Halenald was from either Bidon or La Ville-Bidon, two locations in the Dol region of Brittany.
[1] Halenald gave gifts to Thornton Abbey in Lincolnshire and later became a monk at St Andrews Priory in Northampton.
[2] Halenald married twice – first to Sara, who was the mother of his son John,[2] who was his heir.
[3] However, Katharine Keats-Rohan concluded the chronology of this reconstruction was faulty and instead sees Agnes, daughter of John fitzPayn as the wife of a younger Halenald de Bidun, the elder Halenald's son, while attributing unknown parentage to the latter's second wife Agnes.
[2] Walter de Bidun became the chancellor of Scotland and was Bishop of Dunkeld-elect right before his death.