McCarty name

Hello.  I'm Dennis McCarty, a new member from Delaware, USA.  My family history goes back to my great great great grandfather William McCarty born in New Jersey, USA in either 1794 or 1795 but hits a wall there.  My ancestors in the 1800's lived in Cape May County, New Jersey, USA, so I know that much, but don't know when any ancestors came over from Ireland prior to 1795.  I am assuming Ireland given the McCarty name, but don't know if and when it became McCarty from McCarthy or MacCarthy other than what I read online.  I have someone in New Jersey trying to find William McCarty's parents, but it is difficult due to the 1790-1820 New Jersey census records being destroyed by fire years ago.

     My wife and I are coming to Ireland for the first time in May 2017 and I would love to meet any McCartys.  We will be in Killarney May 24 & 25 and Blarney, Dungarven, and Waterford on May 26. I don't expect to actually find direct relatives since I don't have names prior to 1795, but anyone familiar with the McCarty name history in the area would be very special to meet. I know it's a ways off, but I wanted to get my ducks in line.  Many thanks in advance for your interest in this request.