Earl Thomas of Lancaster was a prominent English nobleman in the 14th century, born around 1300. He was the son of Henry, 3rd Earl of Lancaster and played a significant role in the political landscape of his time. Earl Thomas was known for his opposition to the rule of King Edward II and was involved in various conflicts, including the Despenser War. In 1322, he was captured at the Battle of Boroughbridge and subsequently executed. His death marked a significant moment in the struggle between the nobility and the monarchy in England. Earl Thomas's legacy is often associated with the broader conflicts of the English Civil War and the shifting power dynamics of the era.