Career
He represented Lambton from 1860 to 1861 and North Oxford from 1863 to 1866 in the Legislative Assembly of the Province of Canada as a Reformer. He was born in Logierait, Perthshire, the son of Alexander Mackenzie and Mary Stewart Fleming. Mackenzie came to Canada West in 1842, settling in Sarnia in 1847.
He ran unsuccessfully for a seat in the Legislative Assembly in 1859 and then was elected in an 1860 by-election held after Malcolm Cameron was named to the Legislative Council.
Mackenzie was persuaded to run again in North Oxford in 1863 but later died in office at the age of 45.
