The Honourable Alexander Mackenzie
The second prime minister of Canada came to this country from Scotland in 1842. He was a contractor first at Kingston and later at Sarnia, and constructed a number of public buildings. In 1861 he was elected to represent Lambton in the Legislative Assembly of Canada, and in 1867 for the same constituency in the first House of Commons. As Prime Minister from 1873 to 1878, he dedicated himself to consolidating the newly-formed dominion. Born in Perthshire, 1822. Died in Toronto, 1892. Buried in Lakeview Cemetery, Sarnia.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.