Hi,
You're most welcome - happy I could help, hopefully it's can be proved to be your man
I agree, if he is JENKYN, he must have been in touch with some family at least.
Perhaps following through all the JENKYN children to see who were witness to any marriages, might throw up William? Even the deaths of George & Mary, in case he is informant.
Did your William by any chance leave a will when he died (I'm presuming between 1901 & 1911 somewhere in Middlesex or Surrey?)
George JENKYN who died 1887.He left a Will - or there was at least an Admin as a Probate was granted:
George JENKYN of Boscastle, Cornwall, Carpenter, died 23 Feb 1887
Probate London: 26 April 1887 to Mary JOHNSON (wife of Alfred JOHNSON) Effects £25
(I wonder if Mary JOHNSON is his daughter, the one on the 1851 Census?)John Wills JENKYN who died 1869.He left a Will - or there was at least an Admin as a Probate was granted 14 Jan 1870:
John Wills JENKYN, late of Boscastle, Parish of Forrabury, Cornwall, Mariner (not in the Royal Navy), deceased who died 10 Sep 1869 at sea was proved at Bodmin, on the oath of Alice JENKYN of Boscastle, widow the relict, Sole Executrix, Effects under £600
Might be a bit to far-fetched - but another reason I've seen for a name change, was due to a legacy & part of the conditions of someone's will requiring the legacee to change their surname - albeit the times I've seen it was I think around a substantial inheritance... food for thought in any case?
As an aside, I came across a John England JENKYN in my travels, whom I think is probably a brother of George. He (John) was apparently born 1795 in Boscastle, married Elizabeth Mules on 25 Jan 1820. Died 12 April 12, 1867, in Launceston, Cornwall. He was a carpenter, joiner & a businessman. A number of trees on A**y, possibly had a brother or father named Christopher.
Best of luck with your continued research!
Cheers
AMBLY