How is that you are so certain? I am told by people living in Mayo today that virtually everyone who shared a surname was related, because the pop. was so small. Most people died due to famine and TB, or they left. There is a project called FORY at FTDNA.com that is matching people in FORD family from Ireland. Once you pay the initial fee (for Y-DNA or a family finder test) all the projects are free, so you can use results for other things also. I am matching to GALLAGHER, GARRITY, JENNINGS, COX, MCCARTHY, FOY, GALION, BROWN (yes it's fr County Mayo)and others. There is a project at FTDNA.com called "FORY" where they are finding matches. Once you pay the initial test fee (they send a stick to swab & prepaid envelope), for a Y-DNA or family finder test, all the projects are free.