Duke William of Aquitaine VIII

   Another name for William was Guy-Geoffrey.

  General Notes:

http://en.wikipedia.org/wiki/William_VIII_of_Aquitaine
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 city, 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.

William married Garsende of Périgord. The marriage ended in divorce in Nov 1058.

William next married Matoeda. The marriage ended in divorce in May 1068.

William next married Hildegarde of Burgundy, daughter of Duke Robert Capet I of Burgundy and Ermengarde of Anjou. (Hildegarde of Burgundy was born in 1056 and died in 1104.)