W. T. Cosgrave, also known as William Thomas Cosgrave, was a significant Irish politician who served as the first President of the Executive Council of the Irish Free State. Born on June 6, 1880, and passing away on November 16, 1965, Cosgrave played a crucial role in the establishment and governance of the Irish Free State. A member of the Cumann na nGaedheal party, he held various political positions throughout his career.