If you put in Forrest on the Search field, you get several Thomas Forrests. The one I was interested is on the 4th page of the search results.
However, I see that the place of signing was Coatbridge which is in NW Lanarkshire, so although the address is given as Ballyquin, does this mean that this Thomas Forrest was living in Scotland at the time?
If this is the case then I will have to look at the other two Thomases I found, one with the address of Largy, Londonderry North, and the other Creenasmore, Donegal West.