Thomas de Clare, 4th Earl of Hertford, was a nobleman in England during the 14th century. He was born around 1320 and was a member of the influential de Clare family, which played a significant role in English history. As the Earl of Hertford, he held considerable land and power, contributing to the political landscape of his time. He was also known for his involvement in military campaigns, particularly during the conflicts with Scotland. Thomas de Clare died in 1361, and his title and estates were passed on to his descendants, continuing the family's legacy in English nobility.