Hi Julie,
I don't think the Daniel Whittaker in Haslingden is yours? As their is a family on other censuses for this family (spelling varies from Whitaker/Whittaker).

I haven't found a death of Daniel between 1841-1851 as I'd hoped, thinking maybe that is why he hasn't appeared on the 1851 census. There are quite a few deaths for Ann Whittaker!! But it would be which one

I have tried to do a search for Thomas Whittaker, who married Hannah
And if it is the right one, he seems to have married a lady a bit older than him too!!!
1861
RG9 2722 Folio 32 Page 9
Everton, West Derby
130 Bootle Lane
Thomas Whittaker M Head 31 Officer At County Court Born Cheshire Tabbley Nr Knutsford
Hannah Whittaker M Wife 43 born Chester, Cheshire
A possible for 1851 Census

Gives a Thomas Whittaker living with his Uncle, who happens to be a gardener?
Aldford, Cheshire
HO107 2171 Folio 148 Page 18
Thos Whittaker Head M 54 Gardener born Cheshire Tabley
Elizabeth Whittaker Wife M 61 born Hulton(?) Cheshire
Thos Whittaker Nephew U 21 Labr born Hulton Cheshire
Whilst the place of birth for the Uncle is the same as the place of birth Thomas (nephew) on the 1861 Census?

If he was a Police Officer maybe there is some record of him joining, maybe it might give some more details as to family?
Good Luck!!
Cancan
