Guillaume II DE DAMPIERRE Seigneur de Dampierre

   Research Notes:

The Chronicle of Alberic de Trois-Fontaines names "primogenitus Erchenbaldus…secundus Guilelmus de Moyelen et de Dampetra…tertius Guido" as the three sons of "Guido de Dampetra", specifying that Guillaume married "Margaretam comitisse Flandrie quem Burchardus clericus de Avennis rapuerat".

He succeeded as GUILLAUME II Seigneur de Dampierre.

http://fmg.ac/Projects/MedLands/CHAMPAGNE%20NOBILITY.htm#GuillaumeIIDampierredied1231A

   Marriage Information:

Guillaume married Marguerite II DE HAINAUT Comtesse de Hainault et de Flandres, daughter of Cte Baudouin IX (VI) DE HAINAUT and Marie DE CHAMPAGNE, between 18 Aug 1223 and 15 Nov 1223. (Marguerite II DE HAINAUT Comtesse de Hainault et de Flandres was born on 2 Jun 1202 in Valenciennes, Hainault, France, died on 10 Feb 1279-1280 and was buried in Flines-Laes-Mortagne, Nord, France.)