Date of Birth: 
About William Proudfoot
- William Proudfoot, (February 21, 1859 – December 3, 1922) was an Ontario politician and barrister. He was born in Colborne Township, Huron County, Canada West, the son of Robert Proudfoot, an immigrant from Scotland.
- He was educated in Goderich, studied law at Osgoode Hall and was called to the bar in 1880.
- Proudfoot set up practice in Goderich.
- He married Marion F.
- Dickson in 1886.
- In 1902, he was named King's Counsel. In 1908 he was elected to the Legislative Assembly of Ontario as a Liberal.
- He was re-elected in 1911 and 1914.
- In 1917, he was chosen leader of the Liberal Party and, as such, became Leader of the Opposition in the legislature.
- Proudfoot was challenged as Liberal leader at the party's first leadership convention in June 1919 and was replaced by Hartley Dewart.
- The 1919 election saw the Liberals and their allies drop from 30 seats to 27 with Proudfoot himself defeated in his riding of Huron Centre by the Labour candidate.
- No doubt due to Newton Rowell's influence, he was then appointed to the Senate of Canada where he sat until his death in 1922.
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