(18/10/1925 - 17/09/1983)
17th Dáil - Parliamentary Secretary to the Minister for Lands [21 October 1964 to 21 April 1965]
18th Dáil - Minister for Education [21 April 1965 to 13 July 1966]
Minister for Industry and Commerce [ 13 July 1966 to 10 November 1966] Re-appointed Minister for Industry and Commerce [10 November 1966 to 2 July 1969
19th Dáil - Minister for Industry and Commerce and Minister for the Gaeltacht [2 July 1969 to 9 May 1970]
[continued as Minister for the Gaeltacht on appointment as Minister for Finance]
Minister for Finance [9 May 1970 to 14 March 1973]
21st Dáil - Tánaiste and Minister for Finance and Minister for the Public Service [5 July 1977 to 11 December 1979]
Tanaiste and Minister for Tourism and Transport [12 December 1979 to 25 January 1980]
Minister for Energy [22 January 1980 to 30 June 1981]