Just to add, I also found a couple of references to "The Liberty" in newspapers.
The first was a death notice for a Joseph Whelan who died much more recently in 1998 and the exact reference was:
WHELAN (The Liberty), Sentryhill, Borris-in-Ossory, Co. Laois
The second was much older, a report about a Special Sessions at Borris-in-Ossory in the Midlands County Advertiser of 10 May 1883 where it says "Mr Mara said Mr Delany was charged with intimidating John Deavy, a servant in the employment of Mrs Banks, who resides near Borris-in-Ossory. Mrs Banks directed Deavy to go with her horses to a farm known as The Liberty, Sentry Hill, and to plough it for her daughter, Mrs Delany."
I wondered if this was a farm / estate with lands possibly covering more than one townland and possibly with several houses let on it, but I can't find anything thus far to support that.
Added: Another newspaper covering that 1883 item above has the reference "... to plough the land known as The Liberties at Sentry Hill ..."