|
Placename
|
Definition
|
|
Offaly
|
Descendants
of Ros of the rings (son of a legendary/historical king
|
|
Oghermony
|
Swamp
edge
|
|
Oghill
|
Yew grove
|
|
Ogonnelloe
|
District
of the O'Connolly family
|
|
Olderfleet
Castle
|
Castle
of Ulfrick's fjord
|
|
Omagh
|
Virgin
plain/sacred plain
|
|
Omeath
|
Land of
the descendantrs of Meith
|
|
Oola
|
Apple
or orchards
|
|
Oran
|
Cold spring
|
|
Oranmore
|
Big cold
spring
|
|
Oughterard
|
High upper
place
|
|
Oughtmama
|
Upper
pass
|
|
Oulart
|
Orchard
|
|
Ovens
|
Caves
|
|
Owbeg
|
Little
river
|
|
Owenass
|
River
of the waterfall
|
|
Owenbegs
|
Little
river
|
|
Owenboy
(Owenbwee)
|
Yellow
river
|
|
Owenea
|
River
of the deer
|
|
Owenglas
|
Green
river
|
|
Owenmore
|
Big river
|
|
Owentocher
|
River
of the causeway
|
|
Ownagarry
|
River
of the garden
|
|
Ox mountain
|
Mountain
of the stones
|
|
Oxmantown
or Ostantown
|
Toww of
the Ostmen or Danes
|
