Allex is of Greek origin and means 'defender of mankind'. It is a variant spelling of Alex, which is derived from the Greek Alexander. The name was popularized by Alexander the Great, who was known as the 'Great King of Macedon' in ancient Greece. Allex has been used since the Middle Ages but gained prominence during the Victorian era.
"The name Allex experienced varying popularity between 1988 and 2001, with the highest number of births occurring in 1993 (12), and the lowest in 1988, 1990, and twice in 2001 (5 each time). Overall, there were 71 births recorded during this period."