Thanks so much everyone for all the top tips. You're very kind, and I greatly appreciate your help. Thank you.
I have now identified the surnames for most of the 16 houses on Maritime Terrace, Pontypridd - though some of the houses do not return any results, which is odd.
Does anyone know whether there is any way to identify occupations, too, aside from searching for particular occupations and hoping they will appear? Most of the street's menfolk would have been involved in coal mining in some way, but the actual job titles could have been many and varied. I don't really know where to start. This is so simple on the other censuses, but not so on the 1921.
