If you have LOTS of time on your hands, you might have luck on the US genweb archives for PA : Code: http://www.usgwarchives.net/pa/pafiles.htm There is a site-wide search engine. If you only search "Johnston" there are thousands of hits, but there is probably a way to narrow that some. Unfortunately, I've got too much going on to sit down and look. Were they Catholic? Again, I wish I had the time to do it, but there might be a way to find some parish records - but that's just a guess. Sorry not more help.