think this might be him in 1871
1871
RG10/
isaac evans age 69. b. pembrey. occ. coalminer. head
mary evans age 66. b. kidwell. wife
walter evans age 24. b. treedihaw. occ. coal miner. son
margaret williams age 33. b. pembrey. daughter(mar)
hannah williams age 8. b. abercanaid. grand daughter
jane williams age 5. b. ditto. grand daughter
elizabeth williams age 3. b. ditto. grand daughter
thomas merriman age 28. b. langharne,carmarthanshire. occ. coal miner. lodger(marr)
living at;wyndham road,ystradyfodwg
reg.dist; pontypridd