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The Königswarter family (French: Kœnigswarter) is a JewishAustrian-Hungariannoble family originating from Königswart, Bohemia. In the middle of the eighteenth century, their ancestor Jonas Hirsch Königswarter emigrated to Fürth, Bavaria, where he established a business that made him wealthy. At his death (1805) he left five sons, who founded banking houses successively in Frankfurt, Vienna, Amsterdam, and Hamburg.