From Wikipedia: http://en.wikipedia.org/wiki/Lester_B._Pearson

Lester Bowles "Mike" Pearson, PC, OM, CC, OBE (23 April 1897 – 27 December 1972) was a Canadian professor, historian, civil servant, statesman, diplomat, and politician, who won the Nobel Peace Prize in 1957 for organizing the United Nations Emergency Force to resolve the Suez Canal Crisis. He was the 14th Prime Minister of Canada from 22 April 1963, until 20 April 1968, as the head of two back-to-back minority governments following elections in 1963 and 1965.