I too am looking for information on the Graf Family from Milwaukee, WI. My GG Grandfather Frederick Gustav Preiss was born unknown in Germany. He married Henrietta, daugher of Arthur Briggs and Ottillie unknown. Henrietta was born 1804 in unknown. On a piece of paper I have, I believe that Ottillie/and or Henrietta surname was GRAF.
The children of Gustave Preiss and Henrietta Briggs are:
Frederich John Preiss
Amalia Presiss (My Great Grandmother)
Arthur Preiss Price
Gustave Preiss landed in New York 1851. Became an US Citizen March 4, 1854, Milwaukee WI. Fought in the Civil Wart 1861-1862. He died Oct 19, 1888, Milwaukee, WI; buried Oct 21, 1881, @ Union Cementary.
I hope I have given enough information that you may be able to help, and we can share information.
Looking foward to hearing back.
Janet from California