Walter's first son, William, died young, while in fosterage at the court of King William II "Rufus", and was buried in Lincoln Cathedral, but his other son Ralph lived to become the second Baron Deincourt; his third son was named Walter. Walter (senior) was known to, and described as a blood relative of, Remigius de Fécamp, Bishop of Lincoln who contributed substantially to William I's conquest of England. It has been speculated that D'Aincourt's rewards were due not to his contribution to the conquest but to his kinship of Remigius. However, J.R. Planché believed, on the basis of Walter's son William D'Aincourt being so described on a plaque found in his tomb, that Walter's wife Matilda was of royal descent.[5] On this basis, plus proof that Walter and Matilda made donations on Alan Rufus's behalf, and chronological considerations, Matilda is argued[6] by the historian Richard Sharpe to be a daughter of Count Alan Rufus and of Gunhild of Wessex, and thus a granddaughter of Harold Godwinson, a view that Katharine Keats-Rohan finds convincing[7] (Sharpe's article also cites a suggestion by Trevor Foulds that Matilda d'Aincourt might have been the Princess Matilda who was a daughter of King William the Conqueror and his wife Queen Matilda.)
^"Prosopography of Anglo-Saxon England". Department of History and the Centre for Computing in the Humanities, at King’s College, London, and in the Department of Anglo-Saxon, Norse, and Celtic, at the University of Cambridge. Retrieved 2013-08-28.
^Public domain image from Wikimedia Commons accessed May 2007.
^Nottingham Medieval Studies 36: 42–78. Sharpe, Richard (2007). "King Harold's Daughter". Haskins Society Journal: Studies in Medieval History 19: 1–27