Tithe Apportionment was a process whereby the Poor Law Commission created maps and schedules for each parish or township, for lands which were liable for payment of tithes. The purpose of this exercise was to convert the payment of tithes into payment of a monetary sum. The land area and use are recorded, together with landowners, tenants, and field names where known.

CHRG has details of the 1840 Tithe Apportionment for Chardstock, and once it has been fully transcribed, it will be available here.