I was trying to run down some information on my 2nd great grandaunts line and haven't had any luck...
I was wondering if anyone could help me out with this???
My cousins couldn't find anything on her family except she married an Alonzo 

With help, and a whole lot of research it was uncovered that Alonzo's full name was   
 -Lawrence Alonzo Cox Jan 1842 Belper, Derbyshire, England died 1918 in Nottingham
Here are the facts
Sarah Ann Whiteman was born  JULY ? 1847 • Heanor, Derbyshire, England her parents were 
-Father Thomas Whiteman born ? 1811 • Heanor, Derbyshire, England died in 1963 and 
-Mother Mary Ann (nee Inger) born around 1812-ish Heanor, Derbyshire, England and died 1887.
in the 1851 census Sarah is with her parents 
1861?
in 1871 census she has a daughter Jane
Civil parish   Heanor
County/Island   Derbyshire
Country   England
Registration district   Basford
Sub-registration district   Ilkeston
ED, institution, or vessel   4
Household schedule number   78
Piece   3480
Folio   84
Page number   14
----------------------------
in 1881 they are in 
Registration district   Basford
ED, institution, or vessel   2
Piece   3324
Folio   49
Page number   30
 with kids 
Thomas Cox   7
James Cox   5
Mary H. Cox   4
Did Jane die???
--------------------------------------
1891 
they are in 
Registration district   Basford
Sub registration district   Ilkeston
ED, Institution or Vessel   3
Piece   2663
Folio   76
Household members
Name   Age
Lawrence Cox   49
Sarah A Cox   44
Thomas Cox   17
James Cox   15
I found some other Sarah Ann Cox's in other census but think they are different people...
What I am looking for mainly is 
Sarah Ann Whiteman's exact birthday?
Sarah Ann cox nee Whiteman's date of death? 
Sarah and Lawrence children information? I can't find anything on any of them past 1891
Any and all information up to present time of their children's family lines?
Any help will be appreciated