I found some candidates in 1841: Levi ABLE is living away from the family, but Robert and Hannah have a lot of other children.
HO107/779/13/4/2
Levi ABLE 20 M.S. Yes
living in the household of farmer Edward WHARTER (?), Abbey Farm, Langley
HO107/779/13/9/3
Robert ABLE 45 ag lab Yes
Hannah 45 Yes
John 15 Yes
James 14 Yes
Emily 13 Yes
Mary 12 Yes
William 10 Yes
Susan 8 Yes
Charlotte 6 Yes
Hannah 4 Yes
Sarah 2 Yes
Address: Langley, Norfolk
Remembering that ages were rounded down, I don't know whether this helps with confirming Hannah's age?
Often confirming facts is a question of amassing information - perhaps on later censuses a relative will come to stay? Maybe there is a will which mentions the family's offspring? You should also try to eliminate other possibilities, which is trickier once you get back past the censuses. Don't forget death certificates - the informant might give a vital clue.
kind regards, Arranroots
