Arsenius

Arsenius is the Latinized form of the Greek Arsenios, from arsenios, "virile, mature." Saint Arsenius the Great, the fourth-century Roman tutor who fled the imperial court to become a desert monk in Egypt, lent the name its ascetic dimension. In Ukraine and across the Orthodox world the everyday form is Arsen or Arseniy, with Arsenius as the formal Latinized version. Three syllables with a dignified rhythm, the final ius giving it an almost Roman severity. Rare across the board, more textbook than birth certificate in English usage. For parents drawn to saints, monks, and genuinely uncommon names, it offers real gravitas. Scholarly, spare, quietly noble.