To Recap...
These are the dates & ages that I have for William James Wilson:
On his wedding day in Swansea on the 23rd June 1893, he gives his age as 32yrs.
On the 1901 Census for Wales (taken on the 31st March 1901) his age is given as 40yrs.
On the 1911 Census for Wales (taken on the 2nd April 1911) his age is given as 51yrs.
On his Death Cert, in London, in December 1937, his son gives his age as 77yrs.
Romilly.
Well, those ages all tie in with a birth 1860/61.
Maybe his birthday was 1 April? (40 on 31 March 1901 and 51 on 2 April 1911)

Dawn M
Hi Dawn,
These are the Births listed on the Free BMD Site that cover those dates:
Surname First name(s) District Vol Page
Births Mar 1860
WILSON William James Liverpool 8b 16
Births Sep 1860
WILSON William James W Derby 8b 255
WILSON William James Ulverstone 8e 616
WILSON William James Preston 8e 481
Births Dec 1860
WILSON William James W Derby 8b 245
Births Jun 1861
Wilson William James Liverpool 8b 177
Nothing for Manchester though...
I have previously ordered some of those Certs, but none of them fitted with the info I already had, - and I called a halt after I reached a tally of 10!!
Romilly