This is a long, ongoing project of mine - and there hopefully is a relative somewhere that is doing a better job. I wanted to find all the random Gilhoolys and map where they lived. Originally, I wanted to map where they were born and where they lived, but the duplications made the map unreadable. I need to work on the spreadsheet more.
If you are Gilhooly (direct or by marriage), you can add yourself to the database.