Lea-Anne,
I do not know if you are aware of the Griffith Valuation of all property in Ireland used for taxation purposes. It was carried out between 1847 and 1864 (1862 for Antrim).
This lists William J. Davison renting 24 Acres and barns etc in the townland of Crosshill. He also rented a herd's house and 47 acres of grazing land in the nearby townland of Randox. I cannot find him renting his own house but in the townland of Crosshill there is a James Davison who rented a house, barns and 47 acres. I wondered if William John and his family lived here.
There are several other Davison families in the parish of Killead, probably related.
Regards