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| Gender | Male |
|---|---|
| Language | Greek |
| Other names | |
| See also | Alexia (female) Alexey |
Alexius is the Latinized form of the given name Alexios (Greek: Αλέξιος, polytonic Ἀλέξιος, "defender", cf. Alexander), especially common in the Byzantine Empire. The female form is Alexia (Greek: Αλεξία) and its variants such as Alessia (the masculine form of which is Alessio) in Italian. The surname Lex derives from Alexius.
The name belongs to the most ancient attested Greek names (a-re-ke-se-u in the Linear B tablets KN Df 1229 and MY Fu 718).[citation needed]