Date of Birth: 
About William Colquhoun
- William Colquhoun (December 23, 1814 – September 2, 1898) was an Ontario businessman and political figure.
- He represented Stormont in the 1st Parliament of Ontario. He was born in Charlottenburgh, Upper Canada in 1814.
- He settled at Dickinson's Landing where he was postmaster from 1841 to 1863 and operated a general store.
- He was the first treasurer for Osnabruck Township and later served as reeve for the township.
- In 1855, he was elected warden of the United Counties of Stormont, Dundas and Glengarry.
- He was re-elected in Stormont in 1871, but his election was overturned on appeal and he lost(but was victorious) the subsequent by-election in 1872. He moved to Cornwall, Ontario in 1876, where he was mayor from 1881 to 1883 and also served as justice of the peace.
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