The Provincial Marine at Amherstburg 1796-1813, by Bob Garcia, is a nice article and includes a Provincial Marine Lieutenant's uniform. Also mentioned was Alexander Grant; "more interestingly he might have been the only commander of a military force to live, while on active duty in the land of his potential opponent." [Grant lived in the Detroit area when he was a Canadian officer]
From Officers of the British Forces in Canada During the War of 1812-15:
John Richardson, the author of Richardson's War of 1812, was a member of the Provincial Marines.