Noland,
I saw your reply to my cousin Msshanna, who I have had some contact with via ancestry.com.
If your dad is Michael Duff and Anna Grant's grandson, I would sure be happy to know anything you have about them. They're my paternal great-grandparents. This is what I do know (or what's been reported to me): Michael - born 1844, died Jan 28, 1930 in Coolnacat, Mountrath, Laois/Queens; Anna Grant born abt 1861. Michael (and Anna?) emigrated to the US in 1876 and lived in Philadelphia. I don't know the birth order of the children, but William was born in the US in 1881. They lost an Infant, Mary here in the US too, but I've been unable to locate the cemetery records. I live in another state now, and hope to visit the cemetery when I'm in Philadelphia again. The other children were Edward, Ellen, Fintan, James, William, Lawrence, Patrick, Michael, Catherine (my grandmother), and her twin sister Mary, and Joseph. Several of the children emigrated to the US - all to the Philadelphia area. I think Ellen and Fintan stayed in Ireland. Michael enlisted in the US Army during WWI, but died on his way home to the US. William died in 1933; Patrick died in 1936. He had twin sons, Gerard and Lawrence. Gerard became an Augustinian priest, and died in 2007.
Catherine died in 1959 - she was always fibbing about her age, even on her death certificate - someone had to cross out the date of birth. Mary died in 1985; she missed her twin sister terribly. Joseph died in 1980.
I'd be interested in anything you or your dad have on the family. It would mean a lot to me and my dad, who is now 86. He was the fifth of 8 children. There are three left. Do you have an ancestry.com membership?
Pennsynative