This is the proverbial can of worms for me !
rosie99 - yes those previous entries you will see for LaytonLily are me. Still looking!
avm228 - yes he married Anndora in 1868. He gives his father's name as William Aston, Gun maker. (so many twists (!) and turns though I don't know what to believe about him)
philipsearching - Emma died 1859 and her father is on death certificate as William Aston, watercarrier and it is under her name of Emma Aston. Joseph Twist, who she appeared to be married to in 1851 census gives this in his Will of 1883 - 'To each of my reputed children born to me by my late housekeeper, Emma Aston....' and John and William are not named, but the other children shown on the 1851 census are.
The fact of him changing his name on marriage in 1868 was a case of bigamy. So he presumably went back to his birth surname? his mother's surname of Aston.
As I say, 40 years of getting here little by little, piece by piece, by frustrating piece ! But I know I am not alone in this.
Lot more info on my search in the previous entries on Rootschat.