Newcomen Castle
| Estate(s) | |
|---|---|
| Townland | Knock |
| Civil Parish | Taghmaconnell |
| PLU | Ballinasloe |
| DED | Carrowreagh 19 |
| County | Roscommon |
| Barony | Athlone |
| Description | Newcomen residence in the 18th century. It is shown on the 1st edition Ordnance Survey map but only the site of the castle is recorded on the later 25-inch map of the 1890s. |