Ellie Wood Keith Genealogy

Guillaume VIII de Poitiers, Duc D"Aquitaine

Guillaume VIII de Poitiers, Duc D"Aquitaine

Male 1023 - 1086  (63 years)

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  • Name Guillaume VIII de Poitiers 
    Suffix Duc D"Aquitaine 
    Born 1023  Poitou_Charentes, France Find all individuals with events at this location 
    Gender Male 
    History Guillaume VIII, christened Gui and called Guy-Geoffriou after his wife\'s uncle Geoffrey II Martel, comte d\'Anjou, was born about 1026, the son of Guillaume III-V \'le Grand\', duke of Aquitaine and comte de Poitou, and his third wife Agnès de Bourgogne. On the death of his brother Guillaume V-VII (Guillaume Aigret) in 1058 he became count of Poitou as Guillaume VI and duke of Aquitaine as Guillaume VIII.

    As his brother did before him, he began by gaining control over his vassals. In 1060 he took Toulouse after its count had attacked Bordeaux. After an unsuccessful campaign in 1061 in which he was defeated in the battle of Chef-Boutonne by Geoffrey III \'the Bearded\', comte d\'Anjou, and Foulques IV \'Rechin\', comte d\'Anjou, the half-brothers of his wife Hildegarde de Bourgogne, he captured Saintes and took control of the Saintogne at the end of 1062. This enabled him to link easily its two capitals, Poitiers and Bordeaux (the road between them - the old Roman Way - passing through Saintes). He defeated the count of Armagnac in 1063, and thereby at least in theory restored his authority in Gascony. In that year he also commanded the Crusade to liberate the town of Barbastro; responding to the call of Pope Alexander II, Italian and French troops freed Barbastro from the Moslems (the pope had promised the participants of the expedition against Barbastro a collective indulgence of 30 years).

    The third wife of Guillaume, Hildegarde de Bourgogne, the mother of his last four children, was his third cousin once removed. Pope Gregory VII at first required them to separate, but granted them an exemption. Guillaume then had an abbey built in Poitiers dedicated to St. John de Evangelist (the abbey of Montierneuf, also known as the church of St. John the Evangelist). He placed this abbey under the authority of the abbey of Cluny.

    Guillaume died 25 September 1086 at the château de Chizé. He was buried in the abbey church he founded. 
    History William VIII (c.?1025 – 25 September 1086), born Guy-Geoffrey (Gui-Geoffroi), was duke of Gascony (1052–1086), and then duke of Aquitaine and count of Poitiers (as William VI) between 1058 and 1086, succeeding his brother William VII (Pierre-Guillaume).

    Guy-Geoffroy was the youngest son of William V of Aquitaine by his third wife Agnes of Burgundy. He was the brother-in-law of Henry III, Holy Roman Emperor who had married his sister, Agnes de Poitou.

    He became Duke of Gascony in 1052 during his older brother William VII\'s rule. Gascony had come to Aquitanian rule through William V\'s marriage to Prisca (a.k.a. Brisce) of Gascony, the sister of Duke Sans VI Guilhem of Gascony.

    William VIII was one of the leaders of the allied army called to help Ramiro I of Aragon in the Siege of Barbastro (1064). This expedition was the first campaign organized by the papacy, namely Pope Alexander II, against a Muslim occupied city in the Emirate of Zaragoza, and the precursor of the later Crusades movement. Aragon and its allies conquered the city, killed its inhabitants and collected an important booty.

    However, Aragon lost the city again in the following years. During William VIII\'s rule, the alliance with the southern kingdoms of modern Spain was a political priority as shown by the marriage of all his daughters to Iberian kings.

    He married three times and had at least five children. After he divorced his second[sic, first?, his 2nd wife bore a child, his first did not] wife due to infertility, he remarried to a much younger woman who was also his cousin. This marriage produced a son, but William VIII had to visit Rome in the early 1070s to persuade the pope to recognize his children from his third marriage as legitimate.

    First wife: Garsende (fr) of Périgord, daughter of Count Aldabert II of Périgord (divorced November 1058), no children. She became a nun at Saintes.
    Second wife: Matoeda (divorced May 1068)
    Agnes (1052–1078), married Alfonso VI of Castile
    Third wife: Hildegarde of Burgundy (daughter of duke Robert I of Burgundy)
    Agnes (died 1097), married Peter I of Aragon
    William IX of Aquitaine, his heir
    Owen, D. D. R. Eleanor of Aquitaine: Queen and Legend.
    Nouvelle Biographie Générale. Paris, 1859.  [1
    Died 25 Sep 1086  Chateau de Chize, Poitou_Charentes, France, age 63 Find all individuals with events at this location 
    Buried Abbey Montierneuf Find all individuals with events at this location 
    Person ID I341  Ellie Wood Keith
    Last Modified 15 Feb 2018 

    Father Guillaume III-V \"le Grand\", Duc d\'Aquitaine 996-1030,   b. 960,   d. 31 Jan, 1030  (Age 70 years) 
    Mother Agnes de Bourgogne,   b. Abt 995,   d. 10 Nov, 1068  (Age ~ 73 years) 
    Family ID F959  Group Sheet  |  Family Chart

    Family Hildegarde De Bourgogne,   b. Abt 1050, France Find all individuals with events at this location,   d. Aft 1120, France Find all individuals with events at this location  (Age ~ 71 years) 
    +1. Guillaume IX De Poitiers, Dit Le Trobadour, Duc D"Aquitaine,   b. 22 Oct 1071, France Find all individuals with events at this location,   d. 10 Feb 1126, France, age 54 Find all individuals with events at this location  (Age 54 years)
    Last Modified 15 May 2017 
    Family ID F168  Group Sheet  |  Family Chart

  • Photos
    Abbey at Montieneuf
    Abbey at Montieneuf
    Dedicated by Guillaume VIII

  • Sources 
    1. [S12] Wikipedia, https://en.wikipedia.org/wiki/William_VIII,_Duke_of_Aquitaine.