In 1798, third-born son
Nathan Mayer Rothschild was sent to England to further the family interests in textile importing with £20,000 capital (equivalent of £ million in )—the first foreign branch. Nathan became a naturalized citizen in 1804 and established a bank in the
City of London. In 1810, Mayer entered into a formal partnership agreement with his three eldest sons, thus founding
M. A. Rothschild & Söhne. In 1811, the
Grand Duke of Frankfurt enacted a special law "decreeing that all Jews living in Frankfurt, together with their descendants, should enjoy civil rights and privileges equally with other citizens." A number of Masonic Jews at the time also petitioned the Grand Duke for the "exclusive right to maintain lodges in the city", which was granted. The youngest son of Mayer Amschel, Jacob, was sent to Paris the same year, in 1811, enhancing the family's ability to operate across Europe. This enabled them to profit from the opportunity of financing
Wellington's armies in Portugal, requiring the sourcing of large quantities of gold on behalf of the British government. Rothschild died on 19 September 1812 in Frankfurt am Main. He was buried at the old Jewish cemetery in Frankfurt, located next to the Judengasse. His grave still exists.
A park was named after him, and also a street (Rothschildallee). In 1817, he was posthumously ennobled by the emperor
Francis I of Austria. His descendants furthered the family fortune across Europe—the "five arrows" of banking. Eldest son Amschel Mayer took over the Frankfurt bank and Salomon moved to Vienna. Nathan turned the London branch into one of Europe's most powerful banking institutions (
N. M. Rothschild & Sons), Calmann (gentrified to "Carl") set up a branch in Naples and Jacob ("James") opened
de Rothschild Frères, becoming a giant of finance in Paris. ==Family==