Also known as Guillaume “le Grand” and Guillaume III de Poitou.
Count of Poitou
Duke of Aquitaine
Events
Date of Birth: about 969.
Place of Birth: unknown.
The estimated date is given by Cawley. Père Anselme (2:516) and Cokayne (p. 76) note that sources differ as to whether Guillaume was aged 61 or 71 at his death.
Date of Death: 31 January 1029/30.
Place of Death: Maillezais.
The date and place are given by père Anselme (2:516), by Cokayne (p. 76), and by Dillange (p. 135).
Place of Burial: Maillezais, Abbaye de Saint-Pierre.
The place is given by père Anselme (2:516), by Cokayne (p. 76), and by Cawley.
Relationships
Father: Guillaume IV “Fier-à-Bras”, duke of Aquitaine.
This relationship is given by père Anselme (2:516), by Bachrach (p. 268), by Dillange (p. 113), by Barthélemy (p. 611), and by Cursente.
Mother: Emma de Blois.
This relationship is given by père Anselme (2:516), by Bachrach (p. 268), by Barthélemy (p. 611), and by Dillange (p. 113).
Spouse: Adalmode de Limoges. Married about 997.
This relationship is given by père Anselme (2:516), by Cokayne (p. 76), by Bachrach (p. 268), by Dillange (p. 114), by Barthélemy (p. 611), and by Cursente.
Spouse: Sancha (Brisca) de Gascogne.
This relationship is given by père Anselme (2:517), by Cokayne (p. 76), by Bachrach (p. 268), by Dillange (p. 129), by Barthélemy (p. 611), and by Cursente.
Spouse: Agnès de Mâcon. Married 1019.
This relationship is given by père Anselme (2:517), by Cokayne (p. 74), by Bachrach (p. 268), by Turner (p. 15), by Barthélemy (p. 611), and by Cursente.
Children (by Adalmode):
(Complete source citations for facts about the children on this page are currently outside of the scope of this project. Most information below comes from Cawley.)
Guillaume VI d’Aquitaine (about 1004 - 15 December 1038), count of Poitou, duke of Aquitaine, married Eustachie.
Alix.
Children (by Sancha):
Eudes (died 10 March 1039), count of Poitou, duke of Aquitaine.
Thibaut (died young).
Children (by Agnès):
Pierre (1023 - 1058), later Guillaume VII, duke of Aquitaine, and Guillaume V, count of Poitou, married Ermesinde.
Guy-Geoffroy (1023 - 25 September 1086), later Guillaume VIII, duke of Aquitaine and Guillaume VI, count of Poitou, married (1) Aina de Périgord; married (2) Mathilde; married (3) Audearde de Bourgogne.
Agnès (about 1025 - 14 December 1077) married Heinrich III, Holy Roman Emperor.
References
Anselme de Sainte-Marie. Histoire Généalogique et Chronologique de la Maison Royale de France, des Pairs, Grands Officiers de la Couronne, de la Maison du Roy et des Anciens Barons du Royaume. 9 Volumes (Paris: 1726-1733).
Bachrach, Bernard S. Fulk Nerra, the Neo-Roman Consul, 987-1040: A Political Biography of the Angevin Count, (University of California Press, 1993).
Barthélemy, Dominique. L’an mil et la paix de dieu: la France chrétienne et féodale 980-1060, (Fayard, 1999).
Cawley, Charles. “Guillaume de Poitou” in Medieval Lands: A prosopography of medieval European noble and royal families.
Cokayne, G.E., and G.W. Watson. The Seize Quartiers of the Kings and Queens of England. (1896).
Cursente, B. “Wilhelm V der Groß” in Lexikon des Mittelalters. Band 9 (Stuttgart: 1998).
Dillange, Michel. Les comtes de Poitou: ducs d’Aquitaine (778-1204) (Mougon: Geste éditions, 1995).
Turner, Ralph V. Eleanor of Aquitaine: Queen of France, Queen of England (Yale University Press, 2009).