John Stack and Honora Kineighly and their desendents

Hi, I am researching my 2X Great Grandmother Ellen J O'Sullivan and our ancestors. I have been able to go back several generations beyond Ellen J with the help of a volunteer from this website. Now that I have found more information on Ellen J and that she was baptized in Killorglin and resided in Dromin, I thought I would post again in a specific parish. 

Ellen J was b MAY 1838 in Dromin, Kerry, Ireland; d DEC 1922, Pittsburgh, PA. Her parents were Maurice O'Sullivan and Ellen McMahon (b 23 June 1804); they were married in CASTLEMAINE parish on 9 Feb 1823. Ellen McMahon (b 23 June 1804) and Maurice O'Sullivan had six children: Catherine b 1824, Johanna b 1826, Honora b 1832, Ellen Jane, John b 1839, and Maurice b 1846.  

Ellen McMahon's parents were Eugene McMahon and Honora (Joanna) Stack, (b 15 November 1772). They had three daughters; Ellen McMahon was baptized in KILLEENTIERNA. Her two sisters were Mary, born in 1806, and Johanna, born in 1808. Eugene McMahon and Honora (Joanna) Stack were married in TRALEE on 1 February 1796. 

Honora (Joanna) Stack's parents were John Stack and Honora Kineighly. Honora Stack (b 15 November 1772) baptized in TRALEE; she resided in LISENTANAVALLA.

(Any parish, residence, date, or person's named beyond Maurice O'Sullivan and Ellen McMahon the documentation was either found on Ancestry.com, irishgenealogy.ie or nli.ie)

I am looking for anyone who may be a descendent of John Stack and Honora Kineighly. Or could be some help with my ongoing current brick walls O'Sullivan/Sullivan or any of my great grandfathers mentioned above,  I have found baptismal records on my great grandmothers but no records beyond marriage records on my great grandfathers.

Thank you in advance

Ellen Miller