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The Rothschild family (/ ˈ r ɒ θ (s) tʃ aɪ l d / ROTH(S) -chylde German:) is a wealthy Ashkenazi Jewish noble banking family originally from Frankfurt. The family's documented history starts in 16th century Frankfurt; its name is derived from the family house, Rothschild, built by Isaak Elchanan Bacharach in Frankfurt in 1567. The family rose to prominence with Mayer Amschel Rothschild (1744–1812), a court factor to the German Landgraves of Hesse-Kassel in the Free City of Frankfurt, Holy Roman Empire, who established his banking business in the 1760s. Unlike most previous court factors, Rothschild managed to bequeath his wealth and established an international banking family through his five sons, who established businesses in Paris, Frankfurt, London, Vienna, and Naples. The family was elevated to noble rank in the Holy Roman Empire and the United Kingdom.

During the 19th century, the Rothschild family possessed the largest private fortune in the world, as well as in modern world history. The family's wealth declined over the 20th century, and was divided among many descendants. Today, their interests cover a diverse range of fields, including financial services, real estate, mining, energy, agriculture, winemaking, and nonprofits. Many examples of the family's rural architecture exist across northwestern Europe. The Rothschild family has frequently been the subject of conspiracy theories, many of which have antisemitic origins.