Walram IV De Limbourg
Walram IV was born in 1175.  He died at the age of 51 on July 2nd, 1226.

 Ermessinde De Namur
Ermessinde was born in 1181.  She died at the age of 66 on February 17th, 1247.

 Henri II Le Blond De Luxembourg
Henri II Le Blond was born in 1217.  He died at the age of 64 on November 24th, 1281.