I have James Kilgannon b abt 1812 married to Bridget Kelly b 1810 with 3 children living in Carbondale Pa in 1880. He was the brother of Cormick Kilgannon from Co Sligo who came to Scotland abt 1840. I would love more info on this branch in US if you can make the connection.

One of Cormick's daughters, Mary, married Patrick Sheridan. They had 3 children in Scotland and went out to US about 1881/2 to that area because her uncle was there. He had a grocery store. The Sheridans had 3 more children in US.

There are also many Kilgannons in West Canada descended from James and Kate Kilgannon and from his brother William and his wife Nell. They were the grandsons of my Cormick Kilgannon