The earliest Corjeag of Ballonney I have researched is Patrick, who also bought part of Ballakinnag. Patrick who d. 16663 had son Thomas and dau. Ann who were his administrators (Archdeacons Wills)Thomas d. 1675 and in his will mentioned a certain parcel of land which his father bought and gave him - part of Ballakinnag, left to his daughter Jony. She married John Juke (Duke) of Arbory and is mentioned in the 1703 Composition Book. Patrick, son of Thomas, held Ballonney and part of Ballakinnag in 1703.
Detailed research into the earlier rent rolls is needed. It is also necessary not to confuse the other family of Corjeag in Ballakilley, Kirk Michael.