I am the descendent of Michael Horgan of Killorglin, Co Kerry, who left Ireland in 1850 with his older brother John, younger sister Abigail (who died on the ship), and younger brother Patrick. They sailed out of Cobh (Queenstown) Co. Cork.
I was in Killorglin last year, and couldn't find any Horgan gravesites for their parents, but they died during the famine years so it is probably unlikely there would have been any gravesites to visit. I will return next year and hope to find more information.
Michael Horgan had a large family, and I am descended from his son Michael Horgan Jr. That Michael Horgan married Joanna Sullivan, also from the Kerry/Cork area of Ireland. They lived in southern Minnesota for most of their lives.
I don't know much more than this, so any information, especially about Horgans in Ireland, would be wonderful. Thanks to you.