Hi Holly,
Like you I have Lake family (Norfolk) connections, except my arm of the family from west of Norfolk around Kings Lynn and not the north like your connection.
1841 census Bale HO / 107 / 776 / 20
England LAKE 35 Ag Lab
Sarah 30
John 13
England 12
James 7
Sarah 3
from 1851
England 45
Sarah 43
John 23
James 17
Sarah A 6
In regards to the above have you tried looking back further? As England may have been there mothers or grandmother maiden name. A good place to start searching would be
http://wwwfamilysearch.org Try searching the International data base first.
Back to the above names, is it possible she married the other brother, after the death say of her husband (other brother)? This was not uncommon in Norfolk as was 1st cousin marriages. What does not help is that there was loads of errors in the 1841 and 1851censuses not to mention the other 4 censuses that followed. The first two were the worse by far.

heres a map also to help you get your bearings.
Andy
Greenman22London, UK.