About John A. Costello
John Aloysius Costello was an Irish Fine Gael politician who served as Taoiseach from 1948 to 1951 and from 1954 to 1957. He was leader of the opposition from 1951 to 1954 and from 1957 to 1959 and attorney general from 1926 to 1932. He served as a Teachta Dála (TD) from 1933 to 1943 and from 1944 to 1969. Costello, for the first time, declared publicly that the Irish government was indeed going to repeal the External Relations Act and declare Ireland a republic. This was due to Mulcahy's record during the Irish Civil War. Kavanagh generously praised Costello's forensic skill, and the two men became friends.
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