Ballynalacken Castle, Lisdoonvarna, Co Clare – hotel 

Bence-Jones, Mark. A Guide to Irish Country Houses (originally published as Burke’s Guide to Country Houses volume 1 Ireland by Burke’s Peerage Ltd. 1978); Revised edition 1988 Constable and Company Ltd, London.  

p. 26. “(O’Brien/LGI1912) A single-storey house with a curved bow, close to an old keep on a rock. The seat of the O’Brien family, of which Lord Chief Justice Peter O’Brien, Lord O’Brien of Kilfenora (known irreverently as “Pether the Packer”) was a younger son.”