Boniface I Di+ Montferrato
Boniface I Di+ was born about 1150.  He died on September 4th, 1207 in Monferrato, Italy--killed..

 Helene De+ Busca
Helene De+ was born about 1150 in Bosco, Italy.  She died about 1200.

 Guillaume VI Di+ Montferrato
Guillaume VI Di+ was born about 1170.  He died on September 17th, 1225.