I think I've been in touch with you before. The two names I asked about were on a Gilligan's message board several years ago. I thought you were also on the board.
The Rosses Point Co. address is for Kathleen Kivlehan mother to my friend John. She's a widow now and John has bought the family home. The Gilligan's used to live next door until some years back. Then the land was converted to the Fairy land or Gilligan's World a childs play land. John has tried to find some one who knows of a connection, but no one has. The daughter of the Gilligan who did own the house next to John married the top Soccer player for Ireland a few years ago. And yes from what I've heard over the years Michael and Winefred did live next door to each other.
Maybe the Tilthe count would tell me something.