I believe Grace had a child James William Flint in 1891 out of wedlock.
In 1901 James was with George and Jemima and is related as grandson.
In 1911 James is with Arthur and Grace Rotherham (transcribed wrong for grace) and it says she had been married 17 years. It also says Grace born in 1871.
Found a marriage for a Grace Flint, in 1894 to a Arthur Rotherham states she was 23 and no father listed.
I have therefore ruled out now the Charles and Esther connection but I can't find a birth on the GRO for a Grace Flint born 1871 with no mother's maiden name.
I can therefore only assume she was registered with her mother's maiden name and changed her surname to Flint after her mother wed. more detective work for me to do
Think I got 1874 from 1891 census can't remember. I she was with Charles and Esther on the census I found. It was only when I found she had married Arthur rotherham in 1894 because James Flint was with them as son. However I checked the original marriage cert yesterday and no name under father and also she was 23 when married and 49 in 1921 all leads back to 1871. Btw the Stainforth surname is indexed wrong by gro should be stanfield. I shall sit down with my notes and have a good study
Elaine or Denise, please delete this posting I have found some new information and I do not now think Grace is part of it Once its deleted I shall repost a new request. Sorry for all your hard woirk on this but its backto the drawing board.
My new starting point will be back to Kenneth Flint born 1927 with MMN Clews