Info on SCHWARZSCHILD family of Rückingen Hessen Germany? #germany #general

Melody Schloss

I would like to connect with anyone who might possibly have information on or suggestions for finding information on one of my husband's lines in the late 1700s and early 1800s.
SCHWARZSCHILD family of Rückingen Hessen Germany
Hona Herz SCHWARZSCHILD  Possible death in Rückingen 
was the father of:  
Naftali Herz SCHWARZSCHILD   Birth ca1802 Possibly Rückingen    Death 26 Sep1872 Hanau Hessen Germany
  m#1  Fanny SCHWAB on 26 Oct 1836 at Hanau Hessen    Child: Moritz
            (Fanny died 15 Jul 1845 in Frankfürt on Main at age 32)
  m#2  Sara GLAUBERG on after 1845    Known children: Mathilde, Bertha, a son  (Sara was widow of FÜRTH at time of marr)
Naftali and Fanny were my husband's 3great grandparents.
I found a listing in Kelly's Directory of Merchants Manufacturers and Shippers of a MH Schwab & Schwarzschild, Liebfranenberg 29.
Apparently they were wholesalers in clothing materials and their building was called 'Braunfels'.  Wondering if this is the same Schwab and Schwarzschild?
At the time of his first wife Fanny's death in 1845 the record states she was 'the 32 year old wife of the Jewish merchant Herz Schwarzschild of Rückingen in Kurhessen'. 
Naftali Herz is buried in the Jewish cemetery in Hanau.  
I have been unable to find any information on Naftali's siblings or parents, with the exception of his father's name.  I can find no early records for Rückingen except for a list of surname adoptions in 1811, where Hona Herz chose SCHWARZSCHILD.
Any help would be greatly appreciated.
Melody Schloss
Santa Barbara CA USA