As the Mr Wescott was dead by 1826

I dont think his name or the farm name existed when these hystericle maps were drawn and I dont think they are "TRIG" ummmm could be Cadastal maps.
They are photographic images and result from passes of a 25mm camera across the Veeeeeeeery large maps. Probably done pre WW2 and never updated to Digital images.
I have just gone over all those bits south of Kissing point and Putney point and not found any mention of the farm

I am Lost ... please send search party.
Neil