Henry de Clare, 3rd Earl of Hertford, was a prominent English nobleman born around 1320. He was the son of Edward de Clare, 2nd Earl of Hertford and Margaret de Clare. Henry inherited the title of Earl of Hertford after his father's death in 1344 and became a significant figure in the English court during the reign of King Edward III. Throughout his life, Henry de Clare was involved in various military campaigns, including the Hundred Years' War. He was known for his loyalty to the crown and participated in several important battles. Henry de Clare passed away in 1361, leaving behind a legacy as a dedicated nobleman.