Thank you, Frances. I had known these people were from Malew, but not that they were specifically from Castletown.
Your interpretation makes sense to me. Logically, Archibald chose to sell his share of the house rather than cram two families into it. Understandable, since he had 10 children!
Another step forward!
Of course, I have to ask: Does anyone know the parents of John Gick (d. 1780)?