Family and Royal Connections
Hereswith belonged to the royal line of Deira and was, by Bede's account, a great-granddaughter of Aelle, king of Deira. Her father Hereric was a nephew of King Edwin of Northumbria, and her younger sister was St. Hilda, the founding abbess of Whitby. The baptism of Hereswith and her household by Paulinus of York at York in 627 placed the family among the first generation of Northumbrian Christians.
She married into the royal house of East Anglia, a union that helped bind the two kingdoms. The sources differ on her husband's name: some identify him as Aethelric (or Ecgric), while the Catholic Encyclopedia names Aethelhere, king of East Anglia, and notes that the Liber Eliensis's identification of her husband as King Anna is in error. Her son Ealdwulf (Aldwulf) became king of the East Angles; some accounts also name a second son, Alfwold, and number later East Anglian kings and abbesses among her descendants.