Original: Leonard James Callaghan, Baron Callaghan of Cardiff, KG, PC (27 March 1912 - 26 March 2005), was Prime Minister of the United Kingdom from 1976 to 1979 and leader of the Labour Party from 1976 to 1980.
Simplified: Leonard James Callaghan, (27 March 1912 - 26 March 2005), was Labour Prime Minister of the United Kingdom from 1976 to 1979.