The only Pridgeons at Alford in 1841 are
William 60 Saddler
Lucy 55
Mary 25
Henry 20 Saddler
Eliza 15 Dressm App
all born in county
If your family is the one at Tattersall in 1851 the children seem to have similar names so maybe these are his parents?
There is
HO107/631/7/10p12
Tattershall
Conningsby
Wm Pridgon 25 Saddler
Hannah 25
Sarah 1
all born in county
possibly
Ann Grice 55 Ind is living with them.She looks as though she is part of the household.