Mary de Monthermer

14th-century English noblewoman (1297–1371)

Parents

• Ralph de Monthermer
• Joan of Acre

Children

• Isabella, Countess of Fife

Siblings

• Thomas de Monthermer, 2nd Baron de Monthermer
• Margaret de Clare
• Elizabeth de Clare
• Eleanor de Clare
• Gilbert de Clare, 8th Earl of Gloucester
• Joan de Monthermer
• Edward de Monthermer, 3rd Baron Monthermer

Partners

• Donnchadh IV, Earl of Fife