Encyclopedia: O
632 entries under O · page 1 of 7: Ó Ceallaigh – Oecusse
- Ó CeallaighPeople / groupThe Ó Ceallaigh, or O'Kellys, were the ruling family of Uí Maine in east Galway and south Roscommon from the 10th century to the 16th.
- Ó CléirighPeople / groupThe Ó Cléirigh, or O'Clerys, were a learned family of historians and poets in the service of the O'Donnell lords of Tír Chonaill.
- Ó RaghallaighPeople / groupThe Ó Raghallaigh, or O'Reillys, were a Gaelic Irish dynasty of the Uí Briúin Bréifne who ruled East Breifne, roughly modern County Cavan, from the 13th to the late…
Ó RuaircPeople / groupThe Ó Ruairc, or O'Rourkes, were a Gaelic Irish dynasty of the Uí Briúin Bréifne who ruled Breifne from the 10th century and, after the kingdom split in 1256, West…
O'Brien dynastyPeople / groupThe O'Brien dynasty, in Irish Uí Briain, was a royal family of Munster descended from Brian Boru of the Dál gCais.
O'Cahan dynastyPeople / groupThe O'Cahans, Ó Catháin, were a Gaelic ruling family in the north of present-day County Londonderry, Ireland, from the 12th century to the early 17th.- O'Carrolls of ElyPeople / groupThe O'Carrolls (Ua Cerbaill) of Ely were the ruling dynasty of Éile in the Irish midlands from the 11th century, giving their name to the territory of Ely O'Carroll.
- O'Connor FalyPeople / groupThe O'Connors Faly, Ua Conchobair Failge, were the ruling family of Uí Failge in the Irish midlands from the 11th century to the 1550s.
O'Connor KerryPeople / groupThe O'Connor Kerry, in Irish Ó Conchobhair Chiarraí, were the ruling family of the Ciarraige Luachra in north Kerry, Ireland, from the 11th century.- O'Connor SligoPeople / groupO'Connor Sligo was a branch of the royal O'Connor dynasty of Connacht, descended from Brian Luighnech, which ruled Lower Connacht from Sligo Castle.
O'Donnell dynastyPeople / groupThe O'Donnells, Ó Domhnaill, were a branch of the Cenél Conaill who ruled Tír Chonaill in north-western Ireland from the 13th century to 1607.
O'Donovan familyPeople / groupThe O'Donovans, in Irish Ó Donnabháin, are an Irish family descended from Donnubán mac Cathail, a 10th-century king of the Uí Fidgenti in County Limerick.
O'DriscollPeople / groupThe O'Driscolls (Ó hEidirsceoil) were a Gaelic Irish family of south-west Cork and the ruling line of the Corcu Loígde, named after an early medieval ancestor called…
O'FarrellPeople / groupThe O'Farrells were an Irish ruling family who held the lordship of Annaly, in what became County Longford, from the 12th century.- O'FlahertyPeople / groupThe O'Flahertys, Ó Flaithbheartaigh, are a Gaelic Irish family who were originally kings of Muintir Murchada east of Lough Corrib in Connacht.
- O'Malley clanPeople / groupThe O'Malleys (Ó Máille) were a Gaelic seafaring lineage of Umall, around Clew Bay in County Mayo, western Ireland.
O'MorePeople / groupThe O'Mores, Irish Ó Mórdha, were the ruling family of the Loígis in the Irish midlands from the 11th century, taking their name from an ancestor called Mórda.
O'Neill dynastyPeople / groupThe O'Neill dynasty, Ua Néill in Irish, was a branch of the Cenél nEógain of the northern Uí Néill, named after Niall Glúndub, a high king killed in 919.
O'Sullivan dynastyPeople / groupThe O'Sullivans (Ó Súilleabháin) were a Gaelic Irish family of the Eóganachta of Munster who, after the Anglo-Norman invasion, settled in south Kerry and west Cork.
Oath of PontidaEventThe Oath of Pontida is the traditional founding act of the Lombard League, said to have been sworn on 7 April 1167 at the abbey of Pontida near Bergamo by…
Oaths of StrasbourgWork / monumentThe Oaths of Strasbourg were mutual pledges of alliance sworn in 842 CE by Louis the German and Charles the Bald, grandsons of Charlemagne, against their brother Lothair.- OAU Liberation CommitteeInstitutionThe OAU Liberation Committee was the body set up by the Organisation of African Unity at its founding in 1963 to coordinate and fund the liberation movements fighting…
OaxacaPlaceOaxaca is a state of southern Mexico on the Pacific coast, with its capital at Oaxaca de Juárez.- Oba dynastyStateThe Oba dynasty is the royal line of the Kingdom of Benin, traditionally dated from about 1180 CE when Eweka I was installed after the Ogiso line lost legitimacy.
Oba of LagosTermThe Oba of Lagos is the traditional ruler of Lagos, Nigeria.
Obafemi AwolowoPersonObafemi Awolowo was a Nigerian lawyer and politician, the leader of the Action Group and the first premier of the Western Region from 1954 to 1959.
ObanPlaceOban is a town and port on the Firth of Lorn in Argyll, western Scotland, the main ferry gateway to Mull and the Hebrides.
ObantaPersonObanta is the legendary founder of the Ijebu Kingdom in south-western Nigeria.
ObeliskTermAn obelisk is a tall, narrow, tapering stone monument, often carved from a single block.
Oberkommando der WehrmachtInstitutionThe Oberkommando der Wehrmacht (OKW), or High Command of the Armed Forces, was created by Hitler in February 1938 when he abolished the war ministry and took personal…
ObernkirchenPlaceObernkirchen is a small town in the Schaumburg district of Lower Saxony which grew around a convent founded in the 12th century.
ObersalzbergPlaceThe Obersalzberg is a mountainside above Berchtesgaden in the Bavarian Alps.
ObersontheimPlaceObersontheim is a village in the district of Schwäbisch Hall in Baden-Württemberg, Germany.- Oberto DoriaPersonOberto Doria was a Genoese admiral and statesman of the thirteenth century.
Oberto SpinolaPersonOberto Spinola was a Genoese nobleman of the thirteenth century and leader of the Ghibelline Spinola family who, with Oberto Doria, took power in Genoa in 1270 and…
OberwartPlaceOberwart, in Hungarian Felsőőr, is a town in southern Burgenland, Austria, with a long-established Hungarian-speaking community descended from medieval border guards.- Obi OssaiPersonObi Ossai was the ruler (obi) of Aboh, a trading kingdom on the lower Niger, in the early 19th century.
Obizzo II d'EstePersonObizzo II d'Este was lord of Ferrara from 1264, when the citizens proclaimed him perpetual lord after the death of his grandfather Azzo VII.
Obizzo III d'EstePersonObizzo III d'Este was marquis of Ferrara from 1317 and lord of Modena from 1336, strengthening Este rule over both cities.- Objectives ResolutionWork / monumentThe Objectives Resolution was adopted by the Constituent Assembly of Pakistan on 12 March 1949, under Prime Minister Liaquat Ali Khan.
- Obong of CalabarTermThe Obong of Calabar is the title of the paramount traditional ruler of the Efik people of Calabar in south-eastern Nigeria.
ObotritesPeople / groupThe Obotrites were a confederation of West Slavic tribes in present-day Mecklenburg and eastern Holstein from the eighth to the twelfth centuries.
Obrenović dynastyPeople / groupThe Obrenović dynasty ruled Serbia from 1815 to 1842 and again from 1858 to 1903.
ÓbudaPlaceÓbuda is the oldest part of Budapest, on the west bank of the Danube north of Buda.
ObwaldenPlaceObwalden is a canton of central Switzerland south of Lake Lucerne, with its capital at Sarnen.
Oc EoPlaceOc Eo is an archaeological site in the Mekong delta of southern Vietnam, believed to be the main port of Funan.
OccitaniaPlaceOccitania is the historical region of southern France, with parts of Italy and Spain, where the Occitan language was spoken.
Occupation of AraucaníaCampaign · 1861–1883The Occupation of Araucanía was the Chilean military campaign and settlement that brought the independent Mapuche lands south of the Biobío river under Chilean rule…- Occupation of Bosnia-HerzegovinaCampaign · 1878The occupation of Bosnia-Herzegovina was the entry of Austro-Hungarian troops into the Ottoman provinces of Bosnia and Herzegovina in 1878, authorised by the Congress…
Occupation of IstanbulEventThe occupation of Istanbul was the military occupation of the Ottoman capital by Allied forces following the empire's defeat in the First World War, beginning in 1918.
Occupation of JapanEventThe occupation of Japan was the Allied occupation of the country after its surrender in 1945, directed by the United States.- OchakivPlaceOchakiv is a town in southern Ukraine on the estuary of the Dnieper and Southern Bug.
Ochlockonee RiverPlaceThe Ochlockonee River rises in southern Georgia and flows about 330 kilometres south through the Florida Panhandle to Ochlockonee Bay on the Gulf of Mexico.
OchsenhausenPlaceOchsenhausen is a town in the district of Biberach in upper Swabia, Baden-Württemberg, Germany.
OcotelolcoPlaceOcotelolco was one of the four altepetl, or city-states, that together formed the Nahua state of Tlaxcala in central Mexico, alongside Tepeticpac, Quiahuixtlan and…- Octavian's Illyrian campaignCampaign · 35–33 BCEOctavian's Illyrian campaign of 35–33 BCE was a series of Roman operations led by the future Augustus along the eastern Adriatic and in its hinterland.
Octavio PazPersonOctavio Paz was a Mexican poet, essayist and diplomat who received the Nobel Prize in Literature in 1990.- Octavius MamiliusPersonOctavius Mamilius was the leader of Tusculum in Latium and son-in-law of Tarquinius Superbus, the last king of Rome.
October DiplomaWork / monumentThe October Diploma was a constitutional decree issued by Emperor Franz Joseph I on 20 October 1860, after defeat in Italy had discredited neo-absolutism.
October ManifestoWork / monumentThe October Manifesto was a declaration issued by Tsar Nicholas II in 1905 under pressure from revolution.
October RevolutionRevolution · 1917The October Revolution was the seizure of power in Petrograd by the Bolshevik Party under Vladimir Lenin on 25 October 1917 by the old Russian calendar, 7 November by…
Oda clanPeople / groupThe Oda were a Japanese samurai clan of Owari Province who served as deputy governors under the Shiba before becoming independent warlords in the 16th century.
Oda NobukatsuPersonOda Nobukatsu was the second son of Oda Nobunaga.
Oda NobunagaPersonOda Nobunaga was a Japanese warlord of the sixteenth century who began the military unification of Japan during the Sengoku period.
Oda NobutadaPersonOda Nobutada was the eldest son and heir of the Japanese warlord Oda Nobunaga.
OdaenathusPersonOdaenathus was a ruler of Palmyra in Roman Syria and husband of Zenobia.- Odano NaotakePersonOdano Naotake was a samurai painter of the Kubota domain in Akita and the leading artist of the Akita school, which combined Japanese subjects with Western perspective…
OdawaPeople / groupThe Odawa, also called the Ottawa, are an Anishinaabe people of the Great Lakes, closely related to the Ojibwe and Potawatomi.
OdawaraPlaceOdawara is a city in Kanagawa Prefecture, Japan, on Sagami Bay at the eastern foot of the Hakone mountains.- Ode-ItsekiriPlaceOde-Itsekiri, known to European traders as Big Warri, is a town on an island in the creeks of the western Niger Delta, in today's Delta State of Nigeria.
Odendaal PlanWork / monumentThe Odendaal Plan was a scheme for South West Africa (Namibia) proposed in 1964 by a South African commission under Frans Hendrik Odendaal.
OdenwaldPlaceThe Odenwald is a wooded upland region in southern Hesse, northern Baden-Württemberg and Bavaria, Germany, between the Rhine plain, the Main and the Neckar.
Oder RiverPlaceThe Oder is a river of central Europe flowing north through present-day Czechia, Poland and Germany into the Baltic Sea.
OderbruchPlaceThe Oderbruch is a lowland on the west bank of the Oder in Brandenburg, Germany, along the Polish border.
Oder–Neisse linePlaceThe Oder–Neisse line is the border between Germany and Poland, following the Oder and Lusatian Neisse rivers.
OdessaPlaceOdessa is a port city on the Black Sea coast of present-day Ukraine, founded under Catherine the Great in the 1790s.
Odia languageTermOdia, formerly spelled Oriya, is an Indo-Aryan language spoken mainly in Odisha, India, written in its own rounded script.
OdielPlaceThe Odiel is a river of Huelva province in south-western Spain, rising in the Sierra de Aracena and flowing south to the Atlantic.- Odilo of BavariaPersonOdilo was an Agilolfing duke of Bavaria from about 736 until his death in 748.
OdishaPlaceOdisha, known as Orissa until 2011, is a state on the Bay of Bengal in eastern India, covering the ancient region of Kalinga.- Odo II of BloisPersonOdo II was count of Blois, Chartres and Tours from 1004 and one of the most powerful French nobles of his day.
Odo III, Duke of BurgundyPersonOdo III was duke of Burgundy from 1192 to 1218, the son of Hugh III.
Odo IV, Duke of BurgundyPersonOdo IV was duke of Burgundy from 1315 to 1349.
Odo of FrancePersonOdo was Count of Paris and King of West Francia from 888 to 898.- Odo the GreatPersonOdo the Great was Duke of Aquitaine from about 700 to 735, ruling a virtually independent realm south of the Loire.
Odo, Count of SavoyPersonOdo was Count of Savoy in the mid-11th century, a son of Humbert I White-Hands, founder of the house of Savoy.
OdoacerPersonOdoacer was a Germanic military leader who deposed Romulus Augustulus, the last Western Roman emperor, on 4 September 476 CE.
Odoardo Farnese, Duke of ParmaPersonOdoardo Farnese was duke of Parma and Piacenza from 1622.- OdoyevPlaceOdoyev is a small town in Tula Oblast, Russia, on the Upa river.
OdrysiansPeople / groupThe Odrysians were a Thracian people of the Hebrus (Maritsa) valley in what is now southern Bulgaria and European Turkey.
OduduwaPersonOduduwa is the legendary progenitor of the Yoruba peoples and the founding ruler of Ile-Ife in Yoruba tradition.
Odwira festivalEventThe Odwira is an annual festival of several Akan states of Ghana, among them Asante and Akuapem, held at the time of the yam harvest.
Odysseas AndroutsosPersonOdysseas Androutsos was a Greek military leader of the War of Independence, active in eastern Central Greece.
OdysseusPersonOdysseus, called Ulysses by the Romans, is the legendary king of Ithaca in Greek myth, a hero of the Trojan War famous for his cunning, credited with the stratagem of…
OdysseyWork / monumentThe Odyssey is an ancient Greek epic poem attributed to Homer, probably composed in the late 8th or 7th century BCE.
ŁódźPlaceŁódź is a city in central Poland that grew from a small town into a great textile centre in the 19th century, after the government of Congress Poland promoted…- OeantheiaPlaceOeantheia was an ancient Greek town of Ozolian Locris on the northern shore of the Gulf of Corinth, usually identified with modern Galaxidi.
OECDInstitutionThe Organisation for Economic Co-operation and Development (OECD) is an intergovernmental organisation of mostly high-income democracies, founded in 1961 as the…
OeconomicaWork / monumentThe Oeconomica is a Greek treatise on household and state finance attributed to Aristotle but written by members of his school.
OecussePlaceOecusse is an exclave of East Timor on the north coast of the western, Indonesian half of Timor.