MACKENZIE, WILLIAM LYON

(1795-1861), Canadian politician and journalist; ed. of Colonial Advocate, 1824-33, and became leading demagogue; government attempted in vain to suppre paper; M.P. for York, 1828; several times expelied, but re-elected until writ was suspended; organized the rebellion of Upper Canada, 1837-38; lived in U. S. A. till 1849.: