Defender of the people
A modern spelling variant of Alex, which is a short form of Alexander. It derives from the Greek name Alexandros, combining 'alexein' (to defend) and 'aner' (man).
Less common today
Allex isn't in the latest US Top 1000. It last peaked at #5,035 in 1994.
US births per 5-year period, 1990βpresent (SSA data).