"Roger" . . . . "Earl of March" . "Earl of Ulster" . . . "Roger de Mortimer, 4th Earl of March" . . . . . . . . "Roger Mortimer, 4th Earl of March and 6th Earl of Ulster" . . . "Roger
Mortimer" . . "Roger de Mortimer, Earl of March and Ulster" . . . . . . . . "1374-04-11" . "Sir Roger" . . . . . "1374" . . . . . . . . . "Mortimer" . . "Roger Mortimer, 4th Earl of March" . "Roger Mortimer" . . . . . "Roger, earl of March" . "Roger
Mortimer" . "1398-07-20" . "Roger Mortimer, 4th Earl of March" . . . . "Roger Mortimer, 6th Earl of Ulster" . . . "Roger
Mortimer
4th Earl
of March" . . . "Roger Mortimer, Earl of March" . . "March" . . .