There appears to be a lot of them living in and around Ross-on-Wye, especially Bridstow, Peterstow and Sellack.
In Littlebury's Directory & Gazeteer 1876-7 there is an entry:
Colcombe James, freeholder
Colcombe James, jun., assistant overseer for Sellack, Peterstow, and Bridstow, Picts cross
Colcombe Mrs. James, schoolmistress and organist