[1] The account of Waltheof and his family in Cumbrian monastic cartularies (St Bees and Wetheral), says that he gave land in Allerdale to his three sisters, Octreda, Gunhilda and Maud.
[3] Waltheof's sister Octreda/Ethelreda married Donnchad mac Maíl Coluim, was briefly Queen Consort of Alba, and the mother of William fitz Duncan, mormaer of Moray.
[6] After King Donnchad was killed in November 1094 it is likely that Ethelreda and infant William fled Scotland to Allerdale and the safety of her brother's family.
William fitz Duncan appears to have inherited Waltheof's Allerdale territory from his mother.
[9] Abbot Waltheof was deposed by Papal legate Alberic of Ostia at the Council of Westminster.