King Boniface de Montferrat I of Thessalonica
Boniface was born about 1150 in Italy.  He died on September 4th, 1207.

 Elena de Bosco
Elena was born about 1151 in Italy.  She died before 1204.

 Comte William de Montferrat VI
William was born about 1172 in Montferrat, Italy.  He died on September 17th, 1225.