Edmund Mortimer, 5th Earl of March

Edmund Mortimer
Earl of March Earl of Ulster
Clare Priory, Suffolk, burial place of Edmund Mortimer
Spouse(s)	Anne Stafford
Noble family	Mortimer
Father	Roger Mortimer, 4th Earl of March
Mother	Eleanor Holland
Born	(1391-11-06)6 November 1391 New Forest, Westmeath
Died	18 January 1425(1425-01-18) (aged 33) Trim Castle
Buried	Clare Priory,

Edmund de Mortimer, 5th Earl of March and 7th Earl of Ulster (6 November 1391 – 18 January 1425) was an English nobleman. A great-great-grandson of King Edward III of England, he was heir presumptive to King Richard II of England, his first cousin twice removed, when Richard II was deposed in favour of Henry IV. Edmund Mortimer's claim to the crown was the basis of rebellions and plots against Henry IV and his son Henry V, and was later taken up by the House of York in the Wars of the Roses, though Mortimer himself was an important and loyal vassal of Henry V and Henry VI. Edmund Mortimer was the last Earl of March of the Mortimer family.

Edmund Mortimer, 5th Earl of March, was born at New Forest, Westmeath, one of his family's Irish estates, on 6 November 1391, the son of Roger Mortimer, 4th Earl of March, and Eleanor Holland. He had a younger brother, Roger (born 23 April 1393, died c.1413), and two sisters: Anne, who married Richard, Earl of Cambridge, younger son of the Duke of York (executed 1415); and Eleanor, who married Sir Edward de Courtenay (d.1418), and had no issue.

Edmund Mortimer's mother was the daughter of Thomas Holland, 2nd Earl of Kent, and Alice Fitzalan. Thomas Holland's mother, Joan of Kent, a granddaughter of Edward I, was the mother of Richard II by her second marriage; Alice Fitzalan was the daughter of Richard FitzAlan, 10th Earl of Arundel, and his second wife, Eleanor, daughter of Henry, 3rd Earl of Lancaster, grandson of King Henry III.