Trevadlock is a hamlet south of Lewannick, Cornwall, United Kingdom.[1] It includes a re-furbished old chapel, old schoolroom and semi-detached cottages.
The name Trevadlock has its origins in the Cornish language. It is formed of Cornish: tre ('homestead, settlement', which can turn to 'trev' when in front of a vowel) + ‘adlock’, a particle of uncertain meaning or origin.