Pierre De Bauffremont
Pierre De was born about 1200.  He died about 1240.

 Agnes De Vergy
Agnes De was born in 1210.  She died at the age of 61 in 1271.

 Liebaud IV De Bauffremont
Liebaud IV De was born about 1240.  He died on May 16th, 1303 in Arras/ Alternate DOD given.