I'm also seeking children of George Donaldson & Mary Chalmers. My ggrandfather Charles Donaldson (1836-1911) migrated,with his mother Mary Chalmers, from Scotland to Canada 1855-58. They settled in Tudor Township, Hastings County,Ontario. Am anxious to locate other children of George & Mary Donaldson. Lets hope we can make a connection. I have documented 90% of the descendants of Charles Donaldson and his wife RoseAnn McCann - willing to share.