Cranney Dunney Co Kilkenny

Hello & Many thanks for any help anyone can provide! Seeking help w/Michael Edward Cranney (he became a S. here in America) & Bridget/Bridgid Dunney! They are purported to Co from Co. Kilkenny. They are my Gg'parents, they came to New England before 1889 when their son Michael, Jr. was born here in Massachusetts. Someone was kind enough to give me a marriage date, but I've since forgotten it. When & where in Co. Kilkenny were they married? Witnesses, kin? Their own families, parents, dates, Locs., siblings? I don't really have any info. from that side of the Atlantic? Oh when they came, from what port, what port did they arrive at? Thank you, Jack MacDonald-Hilton