Alexius

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.