Hi all, Thanks to Janet Bessey, Susan Campbell, Susan Leitch and to Del who all clued me in to the fact that the 1851 Census is now on-line. I was able to confirm that the Peter McArhur family I was interested in had left Caledon by that time. There is a Peter McArthur in Sydenham township in 1851, and I wonder if anyone has any idea how to find out from property records when they left Lot 10, Con. 5 WHS Caledon. I already know when they arrived in Sydenham, so if the dates would happen to match I would be looking at the same family. Cheers, Don