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Celtic Boy Names Starting with O

Browse 30 celtic boy names starting with the letter O.

Celtic Boy NamesCeltic Girl NamesAll with O

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O'

Descendent of. Irish surnames formed by prefaci...

7/6

O'brian

Surname.

9/5

O'brien

Surname.

22/9

O'keefe

Surname.

5/11

O'shay

Surname.

8/5

O'shea

Surname.

3/3

Odanodan

Of the red earth.

7/5

Odgar

Legendary son of Aedd.

8/9

Odhran

Pale green.

6/33

Oengus

One vigor.

11/9

Ofydd

Welsh form of Ovid 'a Roman poet'.

6/9

Ogilhinn

From the high peak.

3/7

Ogilvie

From the high peak.

8/7

Oidhche

Night.

3/7

Ol

Legendary son of Olwydd.

1/9

Oliphant

Great strength.

7/5

Olwydd

Tracker.

7/11

Ondyaw

Legendary son of a French Duke.

6/1

Oran

White.

6/3

Orin

White.

6/11

Oscar

Jumping fighter.

7/2

Osckar

Jumping fighter.

9/22

Osker

Jumping fighter.

1/5

Ossian

Fawn.

2/5

Oswallt

Welsh form of Oswald 'strength from God'.

9/3

Owein

Young warrior.

6/3

Owen

Young fighter.

5/3

Owin

Young fighter.

1/7

Owyn

Young fighter.

1/5

Owynn

Wellborn. Form of Ewan.

6/1

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