Today I was able to view the Holy Name church records on microfilm at the Sheboygan FHC. I am not able to read Latin very well but I was able to find the marriage you refer to. As you said they were married Feb 2, 1855. MICHAEL RODDEN, 22, parents: Thomas & Helena, MARIA MURPHY, 18, parents: Jacob & Helena (deceased). Iam attaching an image of the record. I hope this is helpful to your research.