Joseph Florimond Loubat (January 21, 1831 – March 1, 1927) was a French and American bibliophile, antiquarian, sportsman, and philanthropist. He was ennobled as Duc de Loubat by Pope Leo XIII in 1893.Loubat was born in New York City to Alphonse Loubat and Susan Gaillard Loubat. His father was a French inventor and businessman who was engaged in transport infrastructure development in New York City and Paris. Joseph Loubat studied at Heidelberg University and joined the Corps Saxo-Borussia.[1] He was graduated from the University of Paris in 1847, and received a doctorate in law from the University of Jena in 1869.[2] In 1866, he accompanied Gustavus Fox as one of his secretaries during the Assistant Secretary of State for the Navy Fox's diplomatic mission to Russia. Less