Seeking any clues about how to research the Hartmann and Kleinman families of the 19th century Jewish community of Satu Mare.

Significant names are Herman (Armin?) Kleinman and wife Bertha, born abt 1845, children Etel, Selma, Leo, Blanka, Julia, Rudolph, "Zizi", and Ida; and Vilmos Hartmann (husband of Etel Kleinman), brother of Samuel, possibly sons of Moishe, children Zoltan, Emil, Rose, Bertalan "Benn", and unknown twins.

All named here emmigrated to New York betwenn 1902 1nd 1909, except Vilmos (and the possible Moishe), who died in Hungary in about 1908, promting his wife and children to join her parents in the U.S.

Any leads or advice are appreciated. Thanks!