Hi Jen,
Having dived back into Maidstone 1841, I've found the right William for you, and momentarily lost the one that I had yesterday. (Am I going senile in my old age?).
ref HO107 490-09 folio 38 page 31: Medway Street, Maidstone
William Binskin age 45 waterman
Eleanor do age 45
Mary do age 13
Edward Holness age 67 labourer
all born in county
and living next door:
John Binskin age 45 Army
Mary do age 45
Charlotte do age 12
Mary do age 10
all born in county
.... Have just discovered that the William that I found yesterday was on the 1851 census....here he is:
ref HO107 1617a folio 30 page 30: Week Street, Maidstone
William Binskin head mar age 4? (could be 0 or 6) coffee and lodging house keeper born Maidstone
Susannah do wife mar age 37 born Maidstone
William H do son age 2 born do
Edwin W do son age 5 months born do
So there are two William Binskins in Maidstone in 1851, one being a few years older than the other, and could just about be father and son.
Hope this hasn't confused you too much.
xx Carol