Shtadlan
Also mentioned as “Samuel Heidelberg”.
His signature, (at least) until 1692: “Judt von Haydtelberg”; later: “kaiserlicher Kriegsfactor
(1694) or: “kaiserlicher Factor und Hofjud” (1696) [cf: “Samuel Openheimer und sein Kreis” by Max Grunwald ®33]
1660 moving to Heidelberg
He was living in Wien already before the expulsion of all jews in 1670. After that date he was since 1672 working for the emperor as army supplier. In 1676 he obtained officially the privilage to settle (again).
He had 9 children [or more — the oldest were probably from an earlier spouse, unknown] — a.o:
# Daniel-Moshe b’ Samuel Oppenheim(er) >>
# Emanuel/Mendel b’ Samuel Oppenheim(er) >>
# Simon-Wolf b’ Samuel Oppenheim(er) (d. 10.11.1726) >>
# Nathan b’ Samuel Oppenheim(er) (d. 1730) >>
# Abraham b’ Samuel Oppenheim(er) (d.1753) [so far no more info]
# Leie/Lea b’ Samuel Oppenheim-Heidelberg (d. 26.4.1705) >>
# Fromet b’ Samuel Oppenheim-Heidelberg (d. 14.4.1713) >>
# Schoendele b’ Samuel Oppenheim-Heidelberg (d. abt 1711), married to Leib Deutz z Arche

NB -- Quotations [from genealogy Alain Gugenheim -- https://gw.geneanet.org :]
“He became a Court Jew to Emperor Leopold — banker and imperial court factor. He enjoyed the especial favor of Emperor Leopold, to whom he advanced considerable sums of money for the Turkish war. When Austria was embarrassed by its depleted exchequer on the outbreak of the War of the Spanish Succession, in 1701, Samuel Oppenheimer and his two sons, together with the most important commercial houses of Germany, took charge of the commissariat of the imperial forces in Lombardy, the Upper Rhenish states, Tyrol, Bavaria, and Hungary. After his death in May 1703, the imperial government put his estate into bankruptcy, plunging all the stock exchanges with which Oppenheimer had been connected into a serious crisis, especially the Frankfurt stock exchange and all its brokers.”
“Although the Jews had been recently expelled from Vienna in 1670, the emperor permitted Oppenheimer to settle there, together with his "Gesinde", his followers, who included a number of Jewish families. He even received the privilege of building a mansion in the heart of Vienna. He was appointed "Oberfaktor" and court Jew at the recommendation of Margrave Ludwig of Baden, the imperial general in Hungary, to whom he had advanced 100,000 gulden for war expenses. He also enabled Prince Eugene to provide medical attendance for the army during the Turkish war. About the year 1700, a riot broke out and houses were sacked and property looted. As a result, one man was hanged for sacking Oppenheimer's house and others were imprisoned for participating in the disturbance.
During the Eisenmenger controversy, Oppenheimer took steps to suppress the former's "Entdecktes Judenthum", spending large sums of money to win the court and the Jesuits to the side of the Jews. As a result, an imperial edict was issued forbidding the circulation of Eisenmenger's work. Oppenheimer was employed also by the emperor in political missions which were often of a delicate nature.”
Samuel’s downfall had many consequences all over Austria, Germany and Europe:
[from Wikiwand:]
“Oppenheimers bis zu 20 % verzinsten Darlehen stellten den größten Posten unter den Schulden Österreichs nach dem Spanischen Erbfolgekrieg dar. Sie sollen sich auf ca. sechs Millionen Gulden belaufen haben, welche größtenteils über Dritte refinanziert waren. Nach dem Tod Oppenheimers entledigte sich Österreich dieser Schulden, indem es nicht zurückzahlte, sondern den Konkurs über den Nachlass verfügte. Die kaiserliche Konkurserklärung stürzte alle mit Oppenheimer in Verbindung stehenden Geldgeber und nachweislich auch die Frankfurter Börse in eine schwere Krise. Sein engster Vertrauter und Vertreter war Samson Wertheimer (1658–1726)”