Gauthier Ier De Brienne
Gauthier Ier was born in 1045.  He died at the age of 45 in 1090.

 Eustachie De Tonnerre
Eustachie was born in 1040.  She died at the age of 45 in 1085.

 Erard Ier De Brienne
Erard Ier was born in 1070.  He died at the age of 44 in 1114.

 Milon Ier De Brienne
Milon Ier was born in 1075.  He died at the age of 51 in 1126.