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Guillaume IX. Montferrat, De & Isabel Clare, de

Guillaume IX. and Isabel were married in a religious ceremony in 1265. They had a daughter named Isabelle (Margareta).

Personal Details
- Guillaume IX. Montferrat, De
  He died in 1292.
  
  Isabel Clare, de
  Isabel was born in 1240. She died at the age of 31 in 1271.

Children
- Isabelle (Margareta) Montferrat, De
  She died in 1286.