Hi,
I too am chasing the mysterious Stacey family of King's Lynn, I know that William Dow Stacey married Louisa Leggett in 1891 and preceded to have 8 children but Williams past is shrouded (no pun intended) in mystery. Any help would be so much appreciated.
Hello,
I have reread this thread -trying to understand it again

Your William Dow Stacey looks as though there is a clue:
Is he the son of John and Mariah who are boarders with Sarah in 1871?
If so and it does look good - then in 1851 - 1829/303/ 7 they are Dow, living in South Clough Lane Kings Lynn.
Robert Dow 40 yrs
Sarah 39 yrs
Martha 19 yrs
John 16 yrs
James 12 yrs
William 9 yrs
Robert 11 yrs
I am not sure what the connection between the Stacey/Dow is just yet.