You name is completely separate from your ancestry. Think.. 2 parents, both equally ancestors.. 2 names. 4 grandparents (8 gr grandparents), all have unique birth names, all different. 7 of those gr grandparents can be Irish, but the 8th one is the one you get the name from. Don't research a name. Research PERSONS. You have no reason to be concerned about posting a name of someone who is not living. I can tell you my gr grandmother was Martha Smith.. there is no way you can connect that to me, unless I give you my parents, grandparents and their details. Next.. educate yourself on the basic of research, which is only concern yourself with documentable facts. In genealogy, if it isn't documented, it is not a 'fact', it is family tradition. You'll be stunned to find how many traditions wind up being inaccurate. As for not having 'paper' to verify this.. you are starting out exactly the same as any of the rest of us. What you find/ don't find is hard to determine, since none of us know what you used to search. Keep an open mind.. it may be that you simply don't have the experience to know what records are needed, or where they can (can't) be found.