Perhaps closer to Joyford ? (assuming this website is uptodate that is?)
From http://www.funeralsearch.co.uk/fdatowns.php

for Coleford
Ernest Heal & Sons
5 South Rd,
Broadwell
COLEFORD GL16 7BH
Gloucestershire
01594 832159

for Cinderford (less likely perhaps)

Co-operative Funeral Service
Lower High St,
CINDERFORD GL14 2TD
Gloucestershire
01594 822115

Gordon Blake
4a Dockham Rd,
CINDERFORD GL14 2AQ
Gloucestershire
01594 823484

More here http://www.uk-funerals.co.uk/funeral-directors/gloucestershire.html#Lydney

Finally, is it possible the local newspapers would still carry records of his Burial ??.
http://www.theforester.co.uk/contact.cfm