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Canfod canlyniadau yn:
Northfleet (Ship)
Novelists, Welsh
Nuttall, Geoffrey F. (Geoffrey Fillingham), 1911-2007.
Nuttall, J. Ll. (John Lloyd), 1858?-1929.
Ó Cléirigh, Tomás
Ó Donnchadha, Tadhg, 1874-1949.
Ó Donnchadha, Tadhg, 1874-1949
Ó Duilearga, Séamus
Ó Fiannachta, Pádraig, Father, otherwise Patrick Fenton, 1927-2016
Ó Murchú, Tadhg, d. 1971
Ó Ríordáin, Seán P.
Oftedal, Magne
Ogwen Williams, Alun
Ogwen, John, 1944-
Ogwen, John, 1944-, -- Photographs.
Ohio (Ship)
O'Leary, Paul
Oliver, Jac, 1904-1984.
Olwen Wymark.
Opie, Peter Mason, 1918-1982
