Hi Valda
Very many thanks for your detailed reply. I will need to get on and write to Wandsworth Council as I'll be in London in a couple of weeks, although unsure I'll have time to visit the cemetery even if they are able to provide chapter and verse about Frederick's burial.
You are right about the death in Epsom in 1905. We were searching for this for several years, foolishly disregarding this record as Frederick lived and worked in Kensington and as far as we had been told died after a coaching accident. We even started to wonder whether he had in fact just abandoned his family and that the children had been told he had died. During a visit to the LMA some time ago now I decided to revisit the death story and looked up the records of Kensington Infirmary where he may have been taken following an accident and he was there! Furthermore, it was noted he'd been moved to Horton, which I then discovered was an asylum in Epsom. So the pieces fell into place. I do have a copy of his post mortem (although most of it means nothing to me) so the burial is the final piece of the jigsaw. Actually, there is still the query over why he was born in Aldeby (Loddon district, Norfolk) with the surname Soans (variously spelt Sones, Soanes and even Soons in censuses) but when he came to London from Beccles, Suffolk, he had changed his name to Jones, which is what my grandmother's surname was.
Thanks again for your message and details about Wandsworth Council.