Thomas 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. Thomas inherited the title of Earl of Hertford after his father's death in 1344 and played a significant role in the political landscape of his time. Throughout his life, Thomas was involved in various military campaigns, including the Hundred Years' War against France. He was known for his loyalty to the English crown and participated in several important battles. Thomas de Clare passed away in 1361, leaving behind a legacy as a respected nobleman.