Looking for Information About George Frederick Smith from Wales

George Frederick Williams born abt 1860 married Elizabeth Mary Fox who might have been born in South Africa then gone to Wales. They had a son, my grandfather, Graham Williams born abt 1982 and died 23 July 1962. He immigrated to Melbourne,Victoria,Australia as a young man and married my grandmother, Clara Alice Leigh born in 1885 in Carlton,Victoria and died in 1965 in Melbourne,Victoria. They had three children. Alan Dudley Williams born 1914,Edna Elizabeth Williams born 1913 and Elfrida Williams.
I've found two links for his son Graham's birth, one being South Africa and the other Cardiff,Glammorgan,Wales
I now believe that George Frederick Williams went to Johannesburg, South Africa and was an artist who's works are still to be seen there. Could be sculptures.