Thank you for that I am going to speak to the few relatives from Pontypridd who may still recall some info. My Bertha Roberts family married Frank Sanders from Bideford and lived with nine children in the town for many many years. he had run away from his salvation army family with the travelling fairs and ended up in Pontypridd marrying in 1916. His son Reginald, my Grandfather used to talk of John Roberts being involved in the setting up of the trade union at his colliery. If I can identify which colliery do you think there would be an archive somewhere which might have logged this (even if it has now closed?)
Thanks
Regards
Tracy