Many thanks for all this,
it all seems to fit,i think im going to have to get the marriage cert of William to Emma Coachworth to confirm my Williams mother.
Also,hes only down as born c1851 on 1881,on the others its c1840.This made me think that the 1881 entry was more likely to be an error.
Id like to discover who the Ann

is who hes with on 1881,and why Emmas in the asylum.Also shes described as dealers wife,and hes a chimney sweep on all the census.Both his sons were hawkers though,so maybe he did this as well.
Emily Young nee Langford was the last wife,widow of William.
Anything else greatly appreciated,particularly on Ann,who she might have been,why she was in the asylum,and what became of her,
thanks again,
Nel.