Guillaume VI le Grand, seigneur de Montpéllier

• https://en.wikipedia.org/wiki/William_VI_of_Montpellier

William VI of Montpellier was the elder son of William V and his wife Ermessende (daughter of Peter of Melgueil). William succeeded his father in the lordship of Montpellier; he inherited it in 1120, while still a minor, under his mother's guardianship. William of Aumelas was his brother.

William VI's wife was named Sibylle, but her origin is uncertain. According to documents adduced at the annulment of the marriage of Marie of Montpellier, her great-granddaughter, she was the daughter of Boniface del Vasto and therefore the sister of Manfred I of Saluzzo, but this cannot be confirmed.

Inconsolable at the recent death of Sibylle, William VI made his will in 1146 and took holy orders, entering the Cistercian monastery of Grandselve in the diocese of Toulouse[1] in early 1147. He died at some date after 1161, having settled, in that year, an inheritance dispute between his sons William (VII) and Gui.

William VI and Sibylle had five sons and three daughters:

Guillelme or Guillemette, who married Bernard Ato V, viscount of Nîmes and Agde, brother of Roger I Trencavel and Raimond I Trencavel. They had one son, Bernard Ato VI

William VII of Montpellier

William of Tortosa, who married Ermessende of Castries. He joined the Templars in 1157, undertook to remain in Jerusalem for a whole year and died there

Raymond William, who became a Cluniac monk. He was William II, bishop of Béziers, until 1166, later abbot of Amiens until 1187, and bishop of Lodève after that date. He died in 1201

Bernard William, who died before 1172

Gui Guerrejat ("the warrior")

Alais or Azalais, who married Eble III of Ventadorn

Ermessende, who married Raymond Stephen of Servian