Duke Amauri IV De Montfort Of Narbonne
Amauri IV was born in 1193.  He died at the age of 48 in 1241.

 Beatrix De Viennois
Beatrix was born in 1200.  Beatrix is no longer alive.

 Alix De Montfort
Alix was born in 1223.  She died at the age of 56 in 1279.