From what we have gathered together here, nothing is really definite.
You could try Workhouse, birth and baptism records for confirmation of names and addresses. Godparents are often relatives.
This is a link to an explanation re Griffiths Valuation
http://www.rootschat.com/links/0eqn/If your ancestors were not working the land you would not find them but it is a useful guide to surnames.
This site
http://www.askaboutireland.ie/griffith-valuation/ shows more information re the land and maps.
This site
https://www.failteromhat.com/griffiths/armagh/killevy.htm is an index but is good for a quick search for names.
The McGuill family I found give Drumintee/Dromintee as Place of birth. They may not be related or just distantly related to Bridget who gives Armagh as her p.o.b.
The civil parish of Killevy covers Drumintee and Carrickbroad which are adjacent Townlands in County Armagh.
The Tiernan baptism in Drumintee church I posted earlier showed that family living in Carrickbroad.
There are Tierney names in Carrickbroad in the Griffiths info and also McGuill in Drumintee and McGill in Carrickbroad.
You can see them in the indexes.
I hope this helps but please don’t accept it as definitely your ancestors. There are not enough links.
Heywood