Annie -
I'm quite overwhelmed by the help that you and others have posted on the Vigers family.  I am piecing together all the separate bits of information, and I think I can build a fairly full picture.  
Thanks so much for all the research you have done - you have looked in places that I would never have thought of searching.  
Mike 
So pleased that after six years I have finally tracked down details of Sarah Ethedreda Vigers mother's birth - 
Husband:   John Vigers
Birth:   1803 ฎ9   
Christen:   23 Nov 1804   Place:   St Mary Lambeth
Death:   About 1846   Place:    (will held)  Sept 1846 West'r  1 355
Occupation:   Auction'r 1841Cabinet maker / upholsterer 1846 - late S'ton
Father:   Edward Vigers (-1813)
Mother:   Elizabeth (1771-1844)
Other Spouses   Peace Toplis
Marriage:   20 Mar 1830   Place:   St George's Camberwell
Wife:   Sarah Etheldreda 'Eldrie' Aves
Birth:   16 May 1804   
Christen:   11 Jun 1804   Place:   St George, Hannover Sq, Westminster
Death:   About 1833/1837   Place:   ? New York
Father:   William Aves 
Mother:   Sarah 
Children...
1. F Child:   Sarah Etheldreda Vigers
Birth:   1833   Place:   New York  USA (Brit subj)
Christen:   29 Aug 1834   Place:   St Mark's, Lambeth - Source: J Gauld
Death:   1912   Place:   - source: Gauld
Spouse:   Richard John Hickman
Marriage:   25 Jun 1857   Place:   St John the Evangelist, Notting Hill
Best wishes for New Year and 2012
Mike