Antoine de la Mothe Cadillac
Upon his arrival in America, La Mothe adopted his title after the town of Cadillac, Gironde in southwestern France. The city of Detroit became the world center of automobile production in the 20th century. William H. Murphy and Henry M. Leland founded the Cadillac auto company and paid homage to him by using his name for their company and his armorial bearings as its logo in 1902. Various places bear his name in America, in particular Cadillac Mountain in Maine and the town of Cadillac, Michigan.
Lincoln L series
After leaving the company over a dispute with William Durant over World War I production, Cadillac founder Henry Leland created the Lincoln Motor Company. the company produced Liberty V12 aircraft engines as its only source of revenue. With the war finished Lelands decided to make the Lincoln Motor car. The company was reorganised in 1920 & created the first L-series car in 1920, for sale as a 1921 model.