Königswarter (French: Kœnigswarter) is a Jewish Austrian-Hungarian noble 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.
This article incorporates text from a publication now in the public domain: Singer, Isidore; et al., eds. (1901–1906). "Königswarter". Jewish Encyclopedia. New York: Funk & Wagnalls Company.