• NORMAL
  • Olaf : ancestor's descendent
  • Olgierd : famous
  • Oliver : olive tree/ elf warrior
  • Otto : wealth, fortune
  • Owen : youth/ well born/ born from the yew tree

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• GUILTY PLEASURE
  • Oisín : little deer
  • Orlando : famous land
  • Orpheus : the darkness of night
  • Otokar : wealthy and vigilant