In 1837, Samuel Lewis's Topographical Dictionary of Ireland described Shannon Harbour like this:
SHANNON-HARBOUR, a village, in the parish of GALLEN, barony of GARRYCASTLE, KING'S county, and province of LEINSTER, 3 miles (W.) from Cloghan; containing 199 inhabitants. It is situated at the junction of the Grand Canal with the river Shannon, and near the Upper Brosna river, which falls into the Shannon a little above it. ...
Here is one of the stations of the Inland Steam-Navigation Company, from which, on the arrival of the canal packet-boat from Dublin, a steamer starts for Portumna, Killaloe, and Limerick. In the village, which in 1831 contained 33 houses, is a station of the constabulary police.
GB Historical GIS / University of Portsmouth, History of Shannon Harbour, in and County Offaly | Map and description, A Vision of Ireland through Time.
URL: https://www.visionofireland.org/place/29542
Date accessed: 15th May 2024
Not where you were looking for?
Click here for more detailed advice on finding places within A Vision of Ireland through Time, and maybe some references to other places called "Shannon Harbour".