St. Thomas is bounded to the south by Launceston and South Pederwyn,
to the west by Trewinn and Egloskerry, to the north by St. Stephen, to
the east by Launceston.
This little parish is something in the form of an obtuse pile, being
very narrow and wedged in to the east, where the church stands, in the
very extreme part, between Launceston and St. Stephen’s, but stretches
itself out in length and breadth to the west.
Part of it, which is called St. Thomas’s Street, is within the borough
of Launceston, and comes home to Launceston North Gate, but is divided
from Newport and St. Stephen’s by the little river Kensey, which runs
by the wall of the churchyard.