Eamon —, president of the Republic of Ireland from 1959-73 (2,6)
I believe the answer is:
de valera
(Other definitions for de valera that I've seen before include "old Irish statesman" , "Eamon -; Irish PM and President" , "Otherwise known as the 'Long Fella'" , "Lead rave for former Irish Taoiseach and President" , "Head of state" .)