Mary de Monthermer
- Born in 1298
- Deceased after March 30, 1371
Parents
- Ralph de Monthermer (1262 - 1326), Earl of Gloucester
- Joan Plantagenêt (1272 - 1307)
Family
- Married in November 1307, with Duncan of Fife (1285 - 1353), Earl of Fife, issuing
- Isabella ( - c. 1390)