Thomas Connolly Family from Tubbercurry

My great-great-grandparents, Thomas Connolly and Mary Gallagher, left Sligo in 1850 and settled in New Jersey. He was a butcher, as was an apparent relative Martin Connolly, who also settled in New Jersey. Family tradition says they came from Tubbercurry.

Thomas Connolly was born in Ireland in 1809/1810. He married in Ireland Mary Gallagher . They emigrated to America aboard the ship "A.Z." out of Liverpool and arrived in New York on 20 January 1851. On the manifest his occupation is listed as butcher. His age is given as 40. Besides his wife Mary, age 30, and his children Michael, 16; Thomas, 14; William, 7; Pat, 5; Brid[ge]t, 3, and H.J. [Henry L.], infant, he was accompanied by Fanny Narry, 16, whose occupation is listed as "service", and who would marry the younger Thomas, and Mary Glancey, 35, "to husband".

"Pat" would become a priest, and rise to the rank of Monsignor. He obtained a passport in 1893 with the intention of visiting Ireland. 

More detailed information can be found on Werelate:

https://www.werelate.org/wiki/Family:Thomas_Connolly_and_Mary_Gallagher…

Here is the page for Martin Connolly:

https://www.werelate.org/wiki/Person:Martin_Connolly_%281%29

I know these are pretty common names, but I wonder if anyone might see a connection to their family.