Looking for Great Great Grandfaters

Hello,

I am looking for information on my Great Great Grandfather and his
family ( would be Great Great Great Grandfather ).

Here is the info that I have :

                Aaron G Davidson ( Aron Davidson ) 1880 County Census (
Shelby County, Tennessee )

                Born 1832 ( approx )Some say Tennessee, some say Germany
or Prussia.

                Died -- November 13th 1900 - Memphis, Tn, Shelby
County, Buried Memphis TN, Jewish Cem.

                Wife - Mary (smith) Davidson - Age 29 - Birthplace KY -
1850- 1851 Mothers Birthplace TN

                Children -- Rachael Davidson - Age 13 - Birthplace
AR - 1867

                                          Ruth Davidson - Age 11 -
Birthplace TN - 1869

                                          Isidore Davidson - Age 4 -
Birthplace TN - 1876

I have been told that they came from Prussia or Germany but I don't know
Aron's Parents name or

When they came to America or on what ship.

I do know that they were Jewish.

Can you help with this endever ?

Any Info would be greatly appreciated.

Thanks,

Jeff Davidson