Is anyone researching WILSONs in the 1840s in Allegheny County? There are a number of families in the County at that time, and I'm trying to sort them out. I don't know where in Allegheny my Wilson family lived. I know a John Wilson (born about 1806/1810 Ireland) left Allegheny in 1841 for Harrison County, Ohio with his wife Mary McCLELLAND and two children John (b. 1839 PA) and William (b. 1840 PA). Mary McClelland Wilson's siblings and mother left Allegheny in 1839 for Harrison County. Mary's father John McClelland had presumably already died by 1839. There are a number of John Wilsons in the 1840 census but none seem to match up to my John Wilson. Anyone have any advice for how to find him? Thanks in advance, Rick Wilson New York, NY