I have a Patrick Kearns/Cairns b.abt 1839 Ireland, p: Michael Cairns & Margaret Murray. He married (date/location unknown) Mary Ann Mulligan b.Nov 1839 Drogheda, Louth p: John Mulligan & Catherine Anderson. They were residents Lambertville, Hunterdon, New Jersey,(across the river from Buck's Co. PA). Children: John, Mary, Catherine.
I have Margaret Gartland b.1874 Drogheda p: Thomas Gartland & Margaret Byrnes. She is married to Margaret(Mulligan) & Patrick Cairns nephew, Peter F McGillick. He was born 1870 in Drogheda to Peter McGillick and Margaret Mulligan. Margaret Gartland's known siblings were John, Mary, Thomas, Ann Jane, Frank. Some were said to be in PA ("Jack"), others in Boston MA, ours in Fall River, MA.
I write because of common names and places. Please contact me in/when a firmer connection exists.