I don't have the family you are looking for, however, I do have a Schell connection from that time period that came up from the states. My Abraham Baker came up from Lancaster, PA
Marcus Schell b: Sep 22, 1770 in Schell's Bush, Tryon Co., New York d: Jun 1845 in Worth Township, St. Clair, Michigan +Delila Kessler b: Jun 15, 1776 in Mohawk Valley, Herkimer County, NY d: Abt. 1841 in Markham, Ontario ... 2 Nancy Schell b: 1812 in Scarborough Twp, York County, Ontario d: Abt. 1858 in Scarborough Twp, York County, Ontario ....... +Peter Spring Father: David Spring Mother: Mary Harrington b: Aug 07, 1812 in Scarboro Township, York County, Ontario d: Dec 09, 1888 in Scarboro Township, York County, Ontario
... 2 Frederick Schell b: 1797 in Herkimer, New York d: Oct 12, 1885 in Uxbridge, Ontario
Here is the closest to a Mackie connection I have: Annie MacKay b: 1887 d: 1969 +Albert Edward Yake Father: Eypous Yake Mother: Sarah Ann Doaner b: 1874 d: 1944
If you want to persue the Yake connection further, please contact me and I'll give you the email addresses of a couple of people.