HI Rose
I searched the BNA and the article below came up. Try searching for Knockapa as well as Knockaha. The landowner was Reverend Sewell Stubber before this article was published.
> Kings County Chronicle - Wednesday 04 April 1860
IRELAND. THE STUBBER ESTATES. QUEEN’S COUNTY- ALL persons who hold or occupy Lands in Queen’s County, of which the Reverend Sewell Slubber, deceased, was seized in fee or otherwise entitled to at the time of his death; that is to say, the lands of Rossmore, Castlcfleming, Shianderry, Cooltrine, Brokerry, otherwise Brokery. Knockeigh, Kuockicor, otherwise Knockicorr, Deninmori-hagh, otherwise Derriiunorrishagh, part of Ki'deligc, otherwise Killdeligge, Kilklromada, otherwise Killdrouieda, Bailinadnffe, Corran, Croftiskcny, otherwise Crostiskenv, Gortniskriny, otherwise Gortticskrmey’ Ballymullcn, ( lanrnore, Garryduffe, Kilii.rcedyinoie, otherwise Kilbredyraore, Bailowly, otherwise Ballgowley, Garryduffe, Dillaghgahane, otherwise Ballaghagabune, otherwise Bailvghagabane, KiUdelige. otherwise Killdeligge, Killdromady, Ballyneiiufle, Listrine, Castlefleming, Shi amici ry, Knockapa, otherwise Knockaha, part of Knockahi y. otherwise Knockabay, Derrymorish, otheiwise Denymorrish, part Broekery, Colatrine. Ballynakill, part of Castleflcming, ooluabeagh, Coolfinn, Akipp, otherwise Askip, Bullycuoladbcgg, Killbrydy otherwise Ovenington, Killhrydymorc, Shaghne