Looking For My Father

I am looking for a man name manwel my mother met him around September 1977 he would have been black I am mix race ,this is when I would have been conceived in Ireland waterford .she said he came in on the boats that would of come into waterford city at that time he was from greece supposedly. Her name is theresa fitzpatrick she was 18 at the time .this is all the information I have .thanks michelle