Apart from royalty, this name was only moderately popular in France during the Middle Ages. After the French Revolution, when Louis XVI was guillotined, it became less common.
The Normans brought the name to England, where it was usually spelled Lewis, though the spelling Louis has been more common in America. Famous bearers include French scientist Louis Pasteur (1822-1895), French actor Louis de Funès (1914-1983), Scottish author Robert Louis Stevenson (1850-1894), who wrote Treasure Island and Dr Jekyll and Mr Hyde, and American jazz musician Louis Armstrong (1901-1971).
Due to its favourable meaning, this name was popular among early Christians, being borne by many early saints and four popes. It has been used in England since the Middle Ages, though it has been more popular in continental Europe. A notable bearer was the German composer Felix Mendelssohn (1809-1847).
A diminutive of Baylee, or any name containing the element or sound -bay-.
May also be given in reference to the English word "bay," from the Middle English baye, from the Old English beġ 'berry', as in beġbēam 'berry-tree'.
As an English name it can also derive from the month of August, which was named for the Roman emperor Augustus.
As an English name, Alban was occasionally used in the Middle Ages and was revived in the 18th century, though it is now uncommon.