Ballintober (Irish: Baile an Tobair, meaning "settlement of the well") is a village in County Roscommon, Ireland.Ballintober, County Roscommon, is 6 kilometers from the town of Castlerea. It contains a reasonably well preserved remains of a stone castle first mentioned in writing in 1311. It is not recorded who built the castle, but the builders may either be the Normans, or the O'Conor family who ruled Connaught at various times during the last two millennia.