Liam Cosgrave was an Irish Fine Gael politician who served as Taoiseach from 1973 to 1977, Leader of Fine Gael from 1965 to 1977, Leader of the Opposition from 1965 to 1973, Minister for External Affairs from 1954 to 1957, and Parliamentary Secretary to the Minister for Industry and Commerce and Government Chief Whip from 1948 to 1951. He served as a Teachta Dála (TD) from 1943 to 1981.

William Thomas Cosgrave was an Irish Fine Gael politician who served as the president of the Executive Council of the Irish Free State from 1922 to 1932, leader of the Opposition in both the Free State and Ireland from 1932 to 1944, leader of Fine Gael from 1934 to 1944, founder and leader of Fine Gael's predecessor, Cumann na nGaedheal, from 1923 to 1933, chairman of the Provisional Government from August 1922 to December 1922, the president of Dáil Éireann from September 1922 to December 1922, the minister for Finance from 1922 to 1923 and minister for Local Government from 1919 to 1922. He served as a Teachta Dála (TD) from 1921 to 1944. He was a Member of Parliament (MP) for the Kilkenny North constituency from 1918 to 1922.