Looking for Matthews relatives

Hello, I just joined, and am hoping to ultimately find where my Matthews ancestors originated, which I think is most likely somewhere in Ireland.. The most helpful evidence I have is the result of a DNA test through Family Tree DNA. The vast majority of my genetic matches are to old Irish families, but I haven’t had a match to a Matthews individual in Ireland yet, and this is what I am hoping to find. Once I find this individual, it will guide my future research, using the resources of IGRS which I expect will be very helpful. My question is whether you have any suggestions for me making contact with living Matthews descendants in Ireland, especially in county Louth, so that I can attempt to recruit any interested individuals to participate in genetic genealogy? I appreciate your thoughts. 

Best regards, 

Gerry Matthews