The Rothschild banking family of Naples was founded by Calmann (Carl) Mayer von Rothschild (1788–1855) who was sent to the Kingdom of the Two Sicilies from Frankfurt am Main, Germany in 1821 by his father, Mayer Amschel Rothschild. Wanting his sons to succeed on their own and to expand the family business across Europe, Mayer Amschel Rothschild had had his eldest son remain in Frankfurt, while his four other sons went to different European cities to establish a financial institution to invest in business and provide banking services.