Hi Abdul
As mentioned in earlier posting, I believe that John William Fletcher b.1866 Waltham (according to 1911 Census) was in fact born there in 1859. He was around 20 years older than his wife on census but believe he'd 'knocked a few years off' and that he was in fact 51 not 45!
I think you really do need to get the marriage certificate of John William Fletcher and Nellie Johnson in 1905 to confirm if the father is Thomas Fletcher as I believe it should be. I've also found a death entry in 1926 at Grimsby which ties in with a 1859 birthdate (no entry to tie in with a 1866 birthdate).
So, if I am correct, John William Fletcher was born 1859 Waltham, Lincs. son of Thomas Fletcher and Martha Greenfield who married Louth, Lincs. in 1859.
I won't post all the details - as you are on Ancestry you can find out the census details yourself which is all part of the fun - like John William, father Thomas is considerably older than is wife Martha (almost 30 years).
1901 - in Waltham (John W. with widowed mother)
1891 - in Waltham - John W. (shown as William) with widowed mother and 2 brothers.
1881 - in Waltham
1871 - in Waltham but transcribed as Flecher
1861 - in Waltham
1851 - in All saints, Lincs. - Thomas Fletcher with widowed mother Mary - servant is Martha Greenfield who he married 8 years later.
1841 - in Great Grimsby - Thomas and mother.
IGI shows Thomas seemed to fib about his age too (census indicates c.1803 Benniworth, Lincs.) as his baptism was:
Thomas Fletcher bp.23/3/1800 Benniworth, son of Christopher and Mary (looks like siblings were Mary bp.25/3/1797, Martha bp.9/3/1806 and a possible John 21/8/1803 (no parents shown on entry??).
Christopher Fletcher married Mary Marshall 28/6/1796 Burgh on Bain, Lincs. - this ties in with a son of Thomas who was named Marshall Fletcher.
A lot here to be going on with but the key has to be the marriage certificate - if his father was Thomas, a farmer, then this is John William's family.
Obviously late starters in this family - John William appears to be actually 46 (probably lied) and single when he marries, Thomas 59 and single! Thomas died 1886.
Good luck.
Annette