
With help from my cousins and targetted searching, I have confirmed that my Great-great-grandfather Daniel O'Hanlon/Hanlon came from near Kanturk, probably in the Clonfert Parish, Duhallow Barony, County Cork, Ireland.
He was born about 1835, and parents were Cornelius O'Hanlon and Margaret Murphy. There is a newspaper extract reference to a Cornelius O'Hanlon death about 17 January 1898.
Daniel's wife was Margaret O'Halloran, and she came from Ballyhannon, near Quin, County Clare, Ireland.
Margaret was born about 1844, and parents were Michael O'Halloran from Ballyhannon, and Mary Meany from Knockanoura, County Clare.
This is probably as much information that I can hope for from Ireland, until Cork and Clare parish records are processed and available online.
Thanks to those that offered suggestions. The information may help other family members.