Guillame was born about 1217, the son of unknown parents. The place is not known.
He died in 1271. The place is not known.
His wife was Mabille de Montmorency-Marly. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1217 |
|
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| Death | 1271 |
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Note 1
Son of Guy de Montfort, Lord of Sidon, seigneur de Castres and Briande ep Lambert de Thury, baron de Lombers puis Guy de Montfort, seigneur de La Ferté-Alais Adhémar de Monteil