Alois is a name of German origin that comes from the Old High German words adal and walt, which mean "noble" and "power", respectively. The name Alois has been used in various forms throughout history, but it is perhaps most famously associated with two influential figures: Emperor Franz Josef I of Austria-Hungary (born Aloysus Joseph) and his nephew, Archduke Franz Ferdinand, whose assassination sparked World War I.
The name Alois was first recorded in the Middle Ages as a personal name, but it has also been used as a surname throughout Europe. In some cases, the surname Alois may be derived from the given name, while in others it may be of topographic origin, referring to someone who lived near a grove of alder trees (from the German word alor).
Over time, various forms and variations of the name Alois have emerged, including Aloysius, which is often associated with St. Aloysius Gonzaga, the Italian saint and patron of youth; Aloisio in Italy; and the French form Alain.
Despite its rich history and royal connections, Alois remains a relatively uncommon given name today, particularly outside of Germany and Austria. However, it continues to be used as both a first and last name, carrying with it a sense of tradition and nobility reminiscent of its historical roots.
The name Alois experienced significant fluctuations in popularity over these years, with a notable peak of 16 births in 1924 and a low of 5 births each in 1918, 1919, and 1933-1934.