I'd suspect the place you are seeking is spelt (fully) Ballintobber or Ballintober, but now usually Ballintubber (try Google) and called Tubber. This townland is about 20kms eat of Athlone, past Moate and on the north side of the Midland Railway line in an area usually marked as Rosemount. The Fetherstonehaugh family is usually associated with this area. I've been seeking a Deborah Booth born c1735, from this area. Mick