I have been watching this discussion in hopes of finding a link to my Stranahan line. My gr.gr.gr.grandfather was Alexander Stranahan b. 11-11-1801 in County Down. He was one of 4 brothers who came to the US. The brothers names are Robert, Andrew, Alexander(my line) and James.
Alexander married first Jane (?) and second Elizabeth Allenon 1-25-1831 in Philadelphia. They moved to Keoukuk Co., Iowa.
I have alot of information on this family, if you think there might be a link, I'd be happy to share.