Try checking with the Osgoode Township Historical Society & Museum and their extensive Archival collection on Osgoode township Families including the Brownlee, Brunton, Good and MArtin families in the area. They do have a web page.

If you are unable to visit the Museum in person, they have a couple of "genealogists" who will undertake research (for a fee), on your behalf. If you want more info, you can also contact me directly.