Thomas de Clare, 5th Earl of Hertford, was a notable English nobleman born in 1373. He was the son of Thomas de Clare, 4th Earl of Hertford and Margaret de Clare. Thomas succeeded his father as Earl in 1421 and played a significant role in the politics of his time, particularly during the reign of King Henry VI. Throughout his life, Thomas de Clare was involved in various military and administrative duties. He served as a member of the House of Lords and was known for his loyalty to the crown. He passed away in 1429, leaving behind a legacy tied to the noble lineage of the de Clare family.