Sir Roger Mortimer 4th Earl of March and 6th Earl of Ulster

  General Notes:

He was considered the heir presumptive to King Richard II between the death in 1382 of his mother Philippa of Clarence (a granddaughter of King Edward III of England ) until his own death in 1398.
Roger Mortimer's father, the 3rd Earl of March , died in 1381, leaving the six-year-old Roger to succeed to his father's title. Roger was placed under the wardship of Thomas Holland, 2nd Earl of Kent and eventually married Holland's daughter Alianore . During his lifetime, Mortimer spent much time in Ireland ; he served several tenures as Lord Lieutenant of Ireland and died during a battle at Kellistown, Co. Carlow. He was succeeded by his young son, Edmund Mortimer, 5th Earl of March .

Roger married Eleanor Holland.