Thomas of Lancaster was a prominent English nobleman and the second son of Henry, 3rd Earl of Lancaster. Born around 1278, he became the 2nd Earl of Lancaster and played a significant role in the political landscape of medieval England. He was known for his opposition to the rule of King Edward II and was a key figure in the Barons' Wars. In 1322, Thomas was captured at the Battle of Boroughbridge and subsequently executed for treason. His death marked a turning point in the conflict between the barons and the monarchy, influencing the power dynamics of the time. Thomas's legacy is remembered in the context of the struggles for power in medieval England.