I have just learned that my greatgrandfather, John Ahern's (I'll call him #1) parents were John Ahern (I'll call him #2) and Ellen Looby.
John Ahern #2 was born in 1851 and came to the US from Ireland in 1872. Family lore has it that he came from Galway, but Cork is another possibility. Family lore also has it that in Ireland, he was called O'Hern and changed it to Ahern to mark his new life here.
I found John Ahern and Ellen Looby's names in the record of John Ahern #2's marriage. Since he did not read or write, the spelling may not be accurate.
Anyway, does anyone know anything that might be relevant in tracking down John Ahern/O'Hern and Ellen Looby?