Hi Eileen,
I have just looked over your other queries and saw you had found a William/Elin also.
Not sure if you have this;
It is mistranscribed in my opinion.
1851 Census
Chester St Mary on the Hill, Cheshire
HO107/2171/839/40`
William MADDOCK, 55, Head, Mar, Ag Lab, born Llay, Derbyshire
Elina, 57, Wife, Mar, born Nedgues, Flintshire, Wales
Magaret, 15, Daug, born Nedgues
Phebe, 11, Daug, born Nedgues
Elina, 8, Daug, born Darland, Derbyshire
Thomas, 4, Grandson, born Darland, Derbyshire
I think William is born Llay, Denbighshire and it is hard to read.
(matches Christening I found)
Elina Jnr is probably ? Denbighshire not Derby.
See what you think.
There is a Birth Reg for a Thomas Maddocks, Dec 1846, Wrexham, 27 281
+ a Female Maddocks, June 1843, Wrexham.