Hello Bron, I know this is an old post but if you are still around on here. Your Great Grandfather, Evan is my first cousin x 2 removed. I have a few bits of information on him if you are still searching. Including all the census info from 1871 to 1911 and details of his marriage. He never lived in the Rhondda valleys either but did live in Merthyr Tydfil for the 1891 census. I have the name of his father and his Baptism details (his mother Anne never married him). Evan and his wife Mary, also informally adopted Mary's sister's son at the age of one and he is present with them in the 3 census' from 1891 to 1911. Happy to put all the information on here if you would like it - but I will await your response before doing so. You may have had difficulties tracing Evan as he began to use his father's surname and used a double barrelled surname from the time of the 1891 census. Hope you get to see this and look forward to hearing from you, Maggi