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Male Thomas De Monthermer Click to view Thomas De Monthermer in the family tree

Thomas was born in 1301.  Thomas' father was Ralph De Monthermer and his mother was Joan Plantagenet.  His maternal grandparents were Edward I Plantagenet and Eleanor of Castile. He has a sister named Mary.  He is the younger of the two children. He had three half-sisters named Alianor, Margaret and Elizabeth.

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