Sorry I do not have an Alexander in my Trotter branch. That was a mistake. John settled in Tullyskeherny. Two sons continued to farm there. One was Christopher, the remains of his house are still standing. Christopher was my ggfather.
The other was Thomas, whose son, Edward, had the lime kiln on the roadside. I understand that his descendants they went on to establish the quarry at Lurganboy.
Most of the info I have came from an Alfie Trotter who lived to be 100 and died some years ago.