Guillaume I DE DAMPIERRE of Champagne

   Research Notes:

"Guido de Dampetra…et uxor eius…Elvidis et filii Anserici et Guillelmus" approved the donation by "Lethericus de Baudimonto" to the Templars at Provins, by charter dated 1133. The Chronicle of Alberic de Trois-Fontaines names (in order) "Anserici, Guilelmi, Andree et Milonis" as brothers of "Guido de Dampetra" Bishop of Châlons.

Seigneur de Dampierre, de Saint-Dizier et de Moeslain. 1133/60. "Simon dominus Belfortis" confirmed donations to Chapelle-aux-Planches, in the presence of "Hugone fratre meo domino de Brecis...domini Wilermi domini de Dampetra et Milonis de Planceii", by charter dated 1152, witnessed by “...Wilermus dominus de Dampetra et Heleidis mater eius...”

http://fmg.ac/Projects/MedLands/CHAMPAGNE%20NOBILITY.htm#GuillaumeIDampierrediedbefore1161B

   Marriage Information:

Guillaume married Ermengarde. (Ermengarde died after Jul 1190.)