, Roger Mortimer, 1St Earl Of March Roger Mortimer, 1st Earl of MarchI8667b: d: Ancestors ? ? ? Roger Mortimer, 1st Earl of March - ? ? ? Family Group Sheet - ChildPARENT (U) ?BirthDeath Father?Mother?PARENT (U) ?BirthDeath Father?Mother?CHILDRENMRoger Mortimer, 1st Earl of MarchBirthDeath