Thanks very much Jean, I think you have nudged a whole load of pennies to drop! Though it will of course be interesting to see what agric_lad makes of all of this! I might even be related to him!!
If I have this right William Humphreys married Elizabeth Marrow in 1833, Elizabeth being born in 1815-16 in Norley. (By the way did you find William's dob anywhere?) This first marriage produced 2 daughters Ann and Mary Humphreys (or is it spelled Humphries?) Ann married William Shallcross in 1855 (any idea when she was born?) and had a son William Shallcross in 1855 in Acton. The other sister Mary - whom I thought was a Wrench and who is my gggran - was born in 1838-9 in Crowton and married James Walker born 1833 in Kingsley and went on to have a large family of Walkers.
So when William Humphreys died in 1839, in 1850 Elizabeth Marrow Humphreys went on to marry James Wrench who was born 1820-1 in Kingsley. They then had 2 sons Daniel born 1857 and John Wrench born 1859-60.
That's my reading of what you've found - so I suppose now I'm wondering whether there are any other Humphrey and Wrench half-siblings I'm not aware of... I'll eagerly await Agric-lad's news of further ancestors!
Thanks very much to you both,
Ian