John A. Costello Biography

Historical biography and chronological timeline for John A. Costello, based on 6 World History Database records associated with Ireland.

6 records1926–19556 events2 places

Chronological biography

1926

Attorney General9 January 1926

Government / Government of Ireland · Attorney General of Irish Free State · Dublin

Begins service as Attorney General during the Cumann na nGaedheal administration.

1948

First Inter-Party Government18 February 1948

Government / Government of Ireland · Taoiseach of Ireland · Dublin

Becomes Taoiseach of the state's first inter-party government.

Republic of Ireland Act21 December 1948

Government / Government of Ireland · Taoiseach of Ireland · Dublin

Costello's administration secures enactment of the Republic of Ireland Act, ending the Crown's remaining statutory external role.

1949

Republic of Ireland18 April 1949

Government / Government of Ireland · Taoiseach of Ireland · Dublin

The Republic of Ireland Act becomes effective under Costello, marking the state's internationally recognized republican status.

1954

Second Inter-Party Government2 June 1954

Government / Government of Ireland · Taoiseach of Ireland · Dublin

Returns as Taoiseach at the head of a second inter-party government.

1955

United Nations Membership14 December 1955

Government / Government of Ireland · Taoiseach of Ireland · New York

Leads the government when Ireland is admitted to the United Nations.

Titles and roles

Attorney General of Irish Free State · Taoiseach of Ireland

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.