EntityQ21449778· pop 11· linked from 12 articlesO'SullivanSign in to savefamily nameConnectionsRepublic of IrelandCountryIrelandEntityetymology scienceEntityfamily nameEntityIrish peopleEntityUlsterEntitygiven nameEntitygenitive caseEntityCounty KerryEntityRonnie O'SullivanEntityCounty TipperaryEntitydiminutiveEntityMaureen O'SullivanEntityOld IrishEntitySonia O'SullivanEntityHarry Stack SullivanEntityGilbert O'SullivanEntityNorman invasion of IrelandEntityAisling BeaEntityGillian O'SullivanEntityCategoriesAnglicised Irish-language surnamesEnglish-language surnamesSurnamesSurnames of British Isles originSurnames of Irish origin