Lyonstown
| Estate(s) | |
|---|---|
| Townland | Lyonstown |
| Civil Parish | Ardcarn |
| PLU | Boyle |
| DED | Crossna 42 |
| County | Roscommon |
| Barony | Boyle |
| Description | At the time of the first Ordnance Survey a large ruin, said to have been the residence of the Lyons family, was in the possession of the O'Donnell of Greyfield estate. |