Roger_Mortimer,_4th_Earl_of_March--Elizabeth_of_York,_Duchess_of_Suffolk

Roger de Mortimer, 4th Earl of March, 6th Earl of Ulster (11 April 1374 – 20 July 1398) was an English nobleman. He was considered the heir presumptive to King Richard II, his mother's first cousin, as being a great-grandson of King Edward III.
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. The wardship and marriage of Roger was acquired by Thomas Holland, 2nd Earl of Kent who married him off to his 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, County Carlow. He was succeeded by his young son, Edmund Mortimer, 5th Earl of March.