There is a gravestone at Lonan for Thomas and Elizabeth Arnold. The transcript I have seen says Callow but I think it is a miss-transcription of Corlett.

Lonan Old Yard T2

In loving memory/of/THOMAS ARNOLD/Cretch-Veg, Lonan/who died Sept 18th 1873/aged 44 years/also/ELIZABETH CORLETT/wife of the above/who died Sept 21st 1908/aged 73 years/also/GEORGE ARNOLD/son of the above THOMAS & ELIZABETH ARNOLD/died Sept 19th 1920 aged 68 years/(I will give thee rest).