Éamon de Valera (/ˈeɪmən ˌdɛvəˈlɛərə, -ˈlɪər-/, Irish: [ˈeːmˠən̪ˠ dʲɛ ˈwalʲəɾʲə]; first registered as George de Valero; changed some time before 1901 to Edward de Valera; 14 October 1882 – 29 August 1975) was a prominent Irish statesman and political leader. He served several terms as head of government and head of state and had a leading role in introducing the 1937 Constitution of Ireland.