Ó CéirínIrish Meaning ‘descendant of Céirín’, a personal name from a diminutive of ciar ‘dark’, ‘black’. English patronymic -s has been added superfluously.
OddyMedieval English Was first found in Yorkshire where they held a family seat as the lords of the manor of Storkhouse, Gisbern and Withernsea in that shire. Believed to be descended from Count Odo.
OdoemeneNigerian Odoemene roots from Nigeria. It has branched onward to America, and multiple other countries. It literally means 'yellow reluctance' in Igbo.
Ó DonndubhartaighIrish (Archaic) Means "descendant of Donndubhartach", a personal name composed of donn "brown" and dub "black" combined with artach "nobleman".
OdsonMedieval French Means 'son of Odo', Odo meaning 'possessor of wealth' many French Dukes and Counts had the name Odo. ' From the nickname 'Oddy' or 'Hoddy'.
Ó DuibhidhirIrish Means "descendant of Duibhuidhir". Duibhuidhir is a personal name composed of the elements dubh "dark, black" and odhar "sallow, tawny".
Ó DuibhneIrish Means "descendent of Duibhne", a given name possibly meaning "ill-tempered, surly".
O'farrellIrish From Irish Ó Fearghail meaning "descendant of Fearghal. This name is borne by several families in Ireland, in counties Longford, Tyrone, and Wicklow.
Ó GibealláinIrish An Irish-Gaelic surname derived from a given name meaning "descendant of Gibealláin".
Ó GibneIrish 'Descendant of Gibne', a byname meaning "hound". This sept came from Counties Meath and Cavan. This was a very ancient sept but unfortunately, there are few references surviving.
O'gradyIrish Anglicized form of Ó Gradaigh, meaning "descendant of Gradaigh." Gradaigh is a personal name derived from the Irish Gaelic word grada, "the illustrious one."
OhanaJudeo-Spanish From a name meaning "son of Hanna" in Tamazight, either from the given name Hanna 1 or perhaps Tamazight ḥenna meaning "grandmother".
Ó HannáinIrish Hundreds of years ago, the Gaelic name used by the Hannant family in Ireland was Ó hAnnáin, which means "descendant of hAnnáin".... [more]
OlmertJewish Possibly from a Germanic given name of uncertain meaning. It could be derived from the Old High German elements ol meaning "ancestor" and mert, a diminutive of merida meaning "fame" or "bright"... [more]
OmelchukRussian This name migrates from Russia/Belarus and has also been found in the Island of Cyprus. The name could be attributed to the surname 'Damon' disapearing as there was a 'Damon' family in the 1600's with locations unknown... [more]
OpetaiaMaori, Polynesian This name possibly came from the given name Opetaia. A notable bearer of this name is Jai Opetaia, an australian boxer born in 1995.
OppGerman Generally considered a (very) contracted form of given names that contained the Old High German element od "fortune; wealth" (or a variant thereof) and a second element that began with or contained the letter B, for example Audobald.
OpparaIndian, Tamil It is a Tamil name, denoting an agricultural occupation.
OrangeMedieval English, Medieval French, English Derived from the medieval female name, or directly from the French place name. First used with the modern spelling in the 17th century, apparently due to William, Prince of Orange, who later became William III... [more]