Research on Castlefield "Ballymacadam" Castle Site, Co. Offaly (Parish of Letterluna, Barony of Ballybritt). County Inventory Registration: 899.
Contains a field sheet with details to level of preservation, nature of surviving structures, earthworks and cartographic evidence. Incl. sketch of a site plan, a written report over one page and two photographs.

Research to Clonymohan Castle Site, Co. Offaly (Parish of Castletownely, Barony of Clonlisk). County Inventory Registration: 905.
Contains a field sheet and a written report over one page.
(No photographs included.)

Research on Derrydolney Castle Site, Co. Offaly (Parish of Killoughy, Barony of Ballyboy). County Inventory Registration: 907.
Contains a field sheet, a written report over two pages and ten photographs.

Research on Durrow Demesne Castle Site, Co. Offaly (Parish of Durrow, Barony of Ballycowan). County Inventory Registration: 908.
Contains a field sheet, a written report over two pages and six photographs.

Research on Gorteen Castle Site, Co. Offaly (Parish of Kilmanaghan, Barony of Kilcoursey). County Inventory Registration: 915.
Contains a field sheet, a written report over one page and three photographs.

Research on Kincora Castle Site, Co. Offaly (Parish of Wheery or Killagally, Barony of Garrycastle). County Inventory Registration: 919.
Contains a field sheet, a written report over two pages and eight photographs.

Research on Lehinch Castle Site, Co. Offaly (Parish of Kilbride, Barony of Kilcoursey). County Inventory Registration: 921.
Contains a field sheet, a written report over one page and two photographs.

Research on Pigeonstown Castle Site, Co. Offaly (Parish of Letterluna, Barony of Ballybritt). County Inventory Registration: 927.
Contains a field sheet and three photographs.

Research on Roscore Demesne Castle Site, Co. Offaly (Parish of Rahan, Barony of Ballycowan). County Inventory Registration: 934.
Contains a field sheet, a sketch of a site plan, a written report over one page and eleven photographs.

Research on Castletown Bawn, Co. Offaly (Parish of Birr, Barony of Ballybritt). County Inventory Registration: 979.
Contains field sheet with sketches of interior and exterior elevations and a site plan, a written report over two pages and 19 photographs.