This appears to be Thomas in 1891 ...
1891 Census of East Dean, Gloucestershire
RG12/2005 folio 44 page 40
"Wesley Road"
Joseph Mountjoy, head, married, 48, coal miner
Mary Ann Mountjoy, wife, married, 43
Tom do., son, 20, coal miner
James do., son, 16, coal miner
Gertrude do., daughter, 12, scholar
Francis Wm do., son, 11, scholar
Millicent Beatrice do., daughter, 7, scholar
Eva Jane do., daughter, 5, scholar
Helena May do., daughter, 1
All recorded as born in East Dean (which is very near to Coleford)