I would just like to say that during the war of 1812 the majority of the defending forces were raised in Canada (has anyone heard of the Army of Lower Canada besides me? (they actually weren't a particularly large force (6 000 strong) but when you consider how many other soldiers were in Canada up until the fall of Napoleon). Plus once you consider fencibles and militia, and the Canadian Regulars (104th New Brunswick Regiment), and Natives...
Now onto the actual topic:
The first locally raised Highlanders I have heard of and going to war were the Scottish settlers of Glengarry County, Upper Canada, who supported the British advance from the south during the 1838 rebellion. They crossed the Ottawa and crushed (if not intimidated more), the few rebels they encountered. To my knowledge, they suffered no casualties, but they destroyed a large number of homes and crops. In addition to them, there were also the Royal Highland Emigrants, who fought in the American Revolution, and were largely recruited in Halifax and St. Johns. Being an actual military formation (officially), I should consider them a more prevalent unit; however, as the name implies, most of the troops were not born on what is now

soil.
I should think there would have been highlanders from Nova Scotia at the same time, if not earlier (of the 1830's, I mean).
