Lester B. Pearson

Lester Bowles Pearson (23 April 1897 – 27 December 1972) was a Canadian politician, diplomat, and scholar who served as the 14th prime minister of Canada from 1963 to 1968. He also served as leader of the Liberal Party from 1958 to 1968 and as leader of the Official Opposition from 1958 to 1963. Born in Newtonbrook, Ontario (now part of Toronto), Pearson pursued a career in the Department of External Affairs and went on to serve as the Canadian ambassador to the United States from 1944 to 1946.