Haym Salomon (1740-1785) was born in Leszno, Poland to a Jewish family. He immigrated to New York in 1772, where he worked as a businessman and financial broker. When the American Revolutionary War broke out, he strongly supported the patriots and joined the New York branch of the Sons of Liberty. He worked closely with Robert Morris, the Superintendent of Finance, and was the prime financier during the American Revolutionary War against Great Britain.