Thank you for taking the time & effort to respond to my query. I already have all census records for the Owens family from 1860-1940 for Ohio, Indiana, & Illinois. I also have the marriage record for Thomas & Bridget McGovern Owens from the Butler County, OH probate records. What I was trying to achieve with my post, & providing so much information, was to start the process of trying to backtrack for any clues that would help me determine the year & port of entry for their respective immigration from Ireland to the USA.
Thanks again for your expertise.