Do you have an online GEDCOM that I could look at? My Kennedys were from Westmoreland Co in Ligonier Valley, Wash Twp, Bell Twp, Burrell twp around the same time period. Later (1870) they moved to Armstrong Co then Allegheny Co.
Here is a link to my tree:

http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&d...