^M.A. Pollock indicates Alix was the daughter of Robert and his second wife Agnes[1]
References
^ a b c d e f g hPollock 2015, p. 145.
^Guyotjeannin 2000, p. 16.
^Painter 2019, Genealogical chart 1.
^Leson 2015, p. 89.
Sources
Guyotjeannin, Olivier, ed. (2000). Le chartrier de l'abbaye prémontrée de Saint-Yved de Braine (1134-1250). Ecole des Chartes.
Leson, Richard A. (2015). "A Constellation of Crusade: The Resafa Heraldry Cup and the Aspirations of Raoul I, Lord of Coucy". In Lapina, Elizabeth; Morris, April Jehan; Throop, Susanna A; Whatley, Laura J (eds.). The Crusades and Visual Culture. Ashgate Publishing.
Painter, Sidney (2019). The Scourge of the Clergy: Peter of Dreux, Duke of Brittany. Johns Hopkins University Press.
Pollock, M. A. (2015). Scotland, England and France After the Loss of Normandy, 1204-1296: Auld Amitie. Boydell & Brewer.