There's no problem with the history of Robert Dodds Scott. Born about 1802 in Ancrum, Roxburghshire. Moved to Merthyr Tydfil, Glamorgan, Wales, when he was about 20 and married Dinah Edwards. The couple lived in several places including Merthyr, Llanfabon, Troedyrhiw, and Nelson. Robert died in 1873 aged about 70 and Dinah died in 1888 aged about 97. I have been recently supplied with two sets of photos. Both purport to be of Robert and Dinah. I'm not convinced that the photos depict the same couple. (Other set - see Robert Dodds Scott and his wife.2). I posted in the hope of getting some idea as to roughly when each set of photos was taken. I thought the (1) set were much later than is being suggested, but if you're looking for a person who knows absolutely nothing about Victorian fashion or photography, it's me.