Trying to find info

I'm trying to find info on my great great grandfather Patrick O'Rourke. All I know is he married Bridget Belonger. My grandmother thinks his father's name was also Patrick but I don't think she's 100% sure. From what I've found on RootsWeb, he was born February 28, 1875 in Otter Creek, Iowa, married Bridget Evelinia Belonger May 29, 1882 in Shullsburg, WI, and died April 4, 1962 in West Salem, WI.