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Female Mary De Monthermer Click to view Mary De Monthermer in the family tree

Mary De was born in 1298.  Mary De's father is Ralph De+ Monthermer and her mother was Joan Of Acre+ Plantagenet.  Her maternal grandparents were Edward I+ Plantagenet and Eleanor De+ Castilla. She had two brothers and a sister, named Thomas+, Edward De and Joan De.  She is the oldest of the four children. She had a half-brother and three half-sisters, named Gilbert De, Eleanor De+, Margaret De+ and Elizabeth De+.


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