Hello Miriam.
Charlie O'Reilly was born in 1893 and I already know his family history. To have any hope of slotting James Coghlan into Coghlan ancestry, it is his data I need. I don't know who he was or anything about him except his residence in Granite Cottage and a move in 1894 or just before the Thoms Directory for 1894 was printed; he was then listed as James Coghlan Esq.,at 66 Dalkey Avenue between Barnhill Ave and Killiney Rd. It would be a real coincidence if there was no connection between the men when Charlie's mother was [nee Coghlan]. Obviously there was quite a time lapse before Charie lived in the cottage. As I can't find James Coghlan in the 1901 census, I presume he died between 1894 and 1901 but I haveen't found his death details.
Thanks..