ECGFRIDA, daughter of ALDUN Bishop of Durham & his wife --- (----, bur Durham). Simeon of Durham's Account of the Siege of Durham records the marriage of "Cospatric's son…Ucthred" (although from the context "Cospatric" appears to be an error for "Waltheof") and "Bishop Aldun…his daughter…Ecgfrida" and her repudiation by her husband, following which Uhtred married "the daughter of a rich citizen…Styr the son of Ulf…Sigen". Simeon of Durham's Account of the Siege of Durham records Ecgfrida's second marriage to "a certain thane in Yorkshire…Kilvert the son of Ligulf" and "their daughter Sigrida…wife of Arkil the son of Ecgfrid" whose son was "Cospatric…[who married] the daughter of Dolfin the son of Tolfin, by whom he begot Cospatric who of late ought to have fought with Waltheof the son of Eilaf", her repudiation by her second husband, her taking the veil, and her burial at Durham. 1
1 Charles Cawley, <i>Medieval Lands</i>.