Louis Lucien Bonaparte (January 4, 1813 - November 3, 1891) was a French-Italian prince, politician, and philologist best known for his study of Basque and Celtic languages. Bonaparte was born in Worcestershire, England. He was the son of Napoleon Bonaparte's second brother, Lucien Bonaparte. Louis Lucien (1745 - 1840) was born under unusual circumstances. Napoleon believed that his brother was a traitor and imprisoned him in an Italian estate. In 1810, he was called back to France, but instead booked transportation to the United States. En route, he and his wife were capture by the Royal Navy and taken to London, where the British allowed him to settle at Ludlow, and later Worcestershire, where Louis Lucien was born. Even after Napoleon abdicated in 1814, Lucien Bonaparte received a host of noble titles from Pope Pius VII and chose to settle in Italy. His son, Louis Lucien grew up there and was educated at the Jesuit college at Urbino, before studying chemistry and mineralogy. He became a professor at the University of Oxford, where under the influence of Antoine Thomson d'Abbadie d'Arrast (1810 - 1897), he began to study the Basque language, Euskara. These studies became the primary focus of his academic life. Bonaparte's classification of Basque dialects is still used. Louis Lucien Bonaparte died at Fano, Italy.