After the American Revolution, John Graves Simcoe, Lieutenant Governor of Upper Canada, invited Americans, including Mennonites and German Baptist Brethren, to settle in British North American territory and offered tracts of land to immigrant groups. This resulted in communities of Pennsylvania Dutch speakers emigrating to Canada, many to the area called the German Company Tract, a subset of land within the Haldimand Tract, in the Township of Waterloo, which later became Waterloo County, Ontario. Some still live in the area around Markham, Ontario and particularly in the northern areas of the current Waterloo Region. Some members of the two communities formed the Markham-Waterloo Mennonite Conference. Today, the Pennsylvania Dutch language is mostly spoken by Old Order Mennonites.