Hiya Jane -- if you're still checking or getting notification of responses. (Your email address is hidden -- may I suggest that everyone go to www.gmail.com and get an anonymous email account that can be used for posting on genealogy boards?)
This is your Lucy in 1861:
Name: Lucy Reason Age: 28 Estimated Birth Year: abt 1833 Relation: Wife Spouse's Name: Robert Where born: Northamptonshire, England Civil Parish: St Pancras Ecclesiastical parish: Holy Trinity Town: Kentish Town County/Island: Middlesex Country: England Registration district: Pancras Sub-registration district: Kentish Town
Robert Reason 38 Lucy Reason 28 Eliza C Reason 1 Robb George Reason 2 William Reed 33
If we take Lucy's birth details and search in 1851 in Northamptonshire -- dang, Lucy Niblock born in Northampton was a servant, i.e. not in her parents' household.
But aha. Here is her household in 1841:
John S Campion 45 (likely John Samuel Campion died 1843) Sarah Mathews 25 Lucy Neblock 8 Sarah Neblock 10
Interesting, but not easy to figure out!
This is your Lucy's christening in the IGI:
Lucy Niblock Christening: 03 MAR 1833 Northampton, Northampton, England Father: John Niblock Mother: Elizabeth Niblock
Sarah Ann is there, and also two other children:
Charlotte Niblock- parents John and Mary Gender: Female Christening: 03 DEC 1837 Northampton, Northampton, England
Susan Niblock - parents John and Elizabeth Gender: Female Christening: 09 AUG 1835 Northampton, Northampton, England
No mother's surname given in any of them.
Here's an interesting bit -- in 1841:
Name: John Niblock Age: 35 Estimated Birth Year: abt 1806 Gender: Male Where born: Scotland Civil Parish: St Peter Hundred: Northampton County/Island: Northamptonshire Country: England Registration district: Northampton Sub-registration district: All Saints
Charlotte Niblock 3 Elizabeth Niblock 30 Henry Niblock 12 John Niblock 35 Joseph Niblock 9 Mo Susan Niblock 5
John was from Scotland. And although the IGI gives Charlotte's mother as Mary, there she is in the household with John and Elizabeth. It's all quite perplexing!
Elizabeth "Niblack" (as transcribed by Ancestry) is a visitor in a Mills household in all Saints in 1851.
Oh well, maybe you've figured it all out in the intervening years! I was curious whether your Campion was connected to mine, so just thought I'd dabble a bit, but now I'm going home for dinner. ;)