Thomas Mortimer

Sir Thomas Mortimer (c. 1350–1399) was a medieval English soldier and statesman who served briefly in several important administrative and judicial state offices in Ireland and played a part in the opposition to the government of King Richard II.

Sir Thomas was also a close associate of the Lords Appellant, the powerful faction of nobles who opposed the administration of King Richard II.

Edmund's sudden death in December 1381 left the Dublin Government in a quandary since there were very few men willing or qualified to assume the office of Lord Lieutenant, at a time of exceptional political turbulence in Ireland.

Richard Wyre, Bishop of Cloyne, proposed that Thomas Mortimer should be appointed Lord Lieutenant, both for his military experience and his ability to retain the loyalty of his brother's retinue.

[4] In the event King Richard II appointed Thomas's nephew, Roger Mortimer, 4th Earl of March, a child of seven, as Lord Lieutenant.

[7] Arundel was a key member of the group of nobles called the Lords Appellant, who had emerged as opponents of Richard II and the royal favourite Robert de Vere, Duke of Ireland.

Unsurprisingly Mortimer instead chose to flee the country: the King accused Roger, probably with good reason, of conniving at his uncle's escape.

[12] Although the details (if they were accurately reported) of his killing of Sir Thomas Molineux show him in a rather sinister light, Mortimer had the respect and esteem of many who knew him, including his brother and his nephew.

Thomas's father, Roger, 2nd Earl of March
Robert de Vere fleeing after his defeat at the Battle of Radcot Bridge