Christopher is probably correct re-the English name influence which I had not considered previously as many of the English soldiers married Irish girls particularly as the Curragh Camp is in Kildare and is still a huge barracks.
However I was living around the same area long after the English had left and many of my school friends were Brennen and Kavanagh's even relatives, which are common names around Kildare. There were a few Laurence's, and Eddie's in school also but different sirnames.
Ramble...ramble!!!...but I guess every little tittle-tattel helps.
Have you looked at the phone book.
www.eircom.ie