Eustachia married Guillaume I de Champlitte, Prince of Achaia in 1200. Guillaume was born about 1160 in France; died in 1210. [Group Sheet]
Eustachia married Guillaume I Comte Sancerre about 1211. Guillaume was born about 1160 in France; died in 1219. [Group Sheet]
Eustachia married Gautier de Brienne. Gautier was born about 1160; died before 1199. [Group Sheet]