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

Mary was born in 1298.  Mary's father was Ralph de Earl of Gloucester (styled) and her mother was Joan of Acre Plantagenet Cts de Gloucester.  Her maternal grandparents were Edward I Longshanks King of England and Eleanora de Castile Cts de Ponthieu. She had two brothers and a sister, named Thomas de Monthermer, Edward de Montthermer and Joan. She had a half-brother and three half-sisters, named Gilbert de Clare, Margaret, Eleanor and Elizabeth.  She died after 1371.

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