Date of Birth: 
About Mark Senn
- Mark Cecil Senn (1 June 1878 – 10 January 1951) was a Canadian farmer, merchant, teacher and politician.
- Senn served as a Conservative and Progressive Conservative party member of the House of Commons of Canada.
- He was born in Oneida, Ontario.He was first elected to Parliament at the Haldimand riding in the 1921 general election, initially under the Conservative party.
- Senn was re-elected in 1925, 1926, 1930, 1935, 1940 and 1945.
- He did not stand for re-election in 1949 due to health problems.
- Senn died at his residence in Oneida Township on 10 January 1951, survived by his wife and three sons.
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