You have to have had the Reformation because of the priest hole and tunnel plot (incidentally, when is Mariot Chase supposed to have been built? Because the priest hole as described in TTA sounds as though it was put in from the ground up, not retrofitted) though an escape tunnel from a priest's hole which goes to the church sounds more than normally dense. But aged tombstones etc also suggest longevity of the Catholic tradition. So, therefore, Glorious Revolution, total failure.