Likely Cork.However, what are the dates for your Molloys?
My most recent censuses on-line search turned up only 1 Molloy family in Bridgeport in 1880 & none in 1870. I also had no luck for on-line 1900.
My Mary Molloy m. William Garrity sometime in 1871 (CT and city hjs no record). Now, Molloys still resident in that city, however and are "related" to my grt-grndmther but I'm really shaky on that.Am in process of contacting a cousin to help me straighten this out.