We would have to think that the Shanahan's from the area are related in some way..it is just hard when I am only working on onr name of a female side.
In your research have you come across the story of six brothers Shanahan - parents James Shanahan and Bridget Kennedy.
These brothers are Timothy born 1804, John , Michael 1813, Thomoas 1815, James 1816 Nancy (a sister) 1818 Patrick 1822. Their home was at Ballynahow.
The children married in Tipperary - Timothy to Bridget Kinnanne. Timmothy was living in Carrigeen and Bridget in Upperchurch. and so on for all the children of James Shanahan and Bridget Kennedy ended up in Australia. Tim took part in the Eureka stockade
John Shanahan (of Carrigeen) married Peggy Ryan and they and their children came on the Emma Eugenia 1852 and headed for Ballarat.
If any of this sounds familar I do have a large document of this family - one of the brothers Patrick Shanahan married Sarah Taylor and that family I believe are living at some stage in Balan, Victoria where my Bridget Dwyer daughter of the Shanahans of Grangelough near Borrisoleigh ended up.
Bridget Dwyer married William Patrick Lyons and they lived in Balan for many years and Bridget and her brother john Dwyer are both buried in the old Balan cemetery.
Cheers Gay O'Neill