Hello Nettie,
I also have a Spillane. Margaret Spillane married Timothy Shea in, I think, a catholic church, in Kilkenny early 1800's. They had three children that I know of, Timothy Shea jnr, Nora and I believe the youngest was Daniel Shea, who was born in Tralee in 1815, convicted of sheep stealing and transported to Australia in 1838 on the Neptune 4. He married in Sydney and became a successful businessman in NSW. He was my ggggrandfather.
I can't tell you any more about Margaret, unfortunately, because I haven't done much research on her yet.
emmpicanb