OBADIAH (m.) - Heb. 'servant of God'; Eru "God"; -ndur "servant of", thus Erundur
OCTAVIA (f.) - feminine of OCTAVIUS (q.v.), thus Toltye
OCTAVIUS (m.) - Latin 'eighth'; *toltya "eighth", thus Toltyo
ODETTE (f.) - feminine form of ODO (q.v.), thus Herene
ODILA (f.) - feminine form of ODO, see ODETTE
ODO (m.) - from Old Ger. 'prosperity/riches'; heren "fortune", thus maybe Hereno
OIHANE (m.) - Basque 'rainforest, jungle'; perhaps Vercatauro (for "wild forest")
OLAF (m.) - Old Norse 'ancestor's descendant'; nostar "parent", -ion "descendant of ", so Nostarion
OLGA (f.) - form of HELGA (q.v.)
OLIVER (m.) - perhaps from Germanic 'elf army'; Elda "elf", hosta "host", so it might be Eldahosto; some say it mean 'bringer of peace"; raine "peace", colindo "bearer" (no better word for the time being), so Rainecolindo
OLIVIA (f.) - feminine of OLIVER (q.v.), so Eldahoste or Rainecolinde
OLWEN (f.) - Welsh 'footprint + white/fair'; runya "footprint"; losse "white", thus Runyalos
OPHELIA (f.) - possibly derivative of Greek 'help'; resta- "aid" (from Qenya Lexicom, it may happen it is not valid), thus could be Restawen, Restiel, etc.
ORIEL (f.) - Old Ger. 'fire + war/battle/strife'; náre "fire"; ohta "war", thus Nárohte
ORLANDO (m.) - Italian form of ROLAND (q.v.), so Alcarnor
OSBERT (m) - Old Eng. 'God + bright'; Eru "bright"; calima "bright", thus Erucalimo
OSCAR (m.) - maybe Old Eng. 'God + spear'; Eru "God"; ecco "spear", thus Eruecco
OSMUND (m.) - Old Eng. 'God + protector'; Eru "God"; *varyar "protector", thus Eruvaryar
OSWALD (m.) - Old Eng. 'God + guard'; Eru "God"; *varno "guard", thus Eruvarno
OSWIN (m.) - Old Eng. 'God + friend'; Eru "God"; -ndil "-friend", thus Erundil
OTTO (m.) - variant of ODO (q.v.)
OTTILA, OTTILIE - from ODILA (q.v.)
<get out get outta here enough already>