House of Oldenburg
European dynasty of German origin
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The dynasty rose to prominence when Count Christian of Oldenburg was elected King of Denmark in 1448, of Norway in 1450, and of Sweden in 1457. Elimar I, Count of Oldenburg is the earliest known direct male-line ancestor of King Haakon VIII and King Charles III. King Frederik X is also part of the House of Oldenburg, cognatically.
History
Count Elimar I was first mentioned in 1091. The ancestral home of the family is Oldenburg Castle. In the 12th century, Rastede Monastery near Oldenburg became their house monastery and later their country seat to this day. Marriages of medieval counts of Oldenburg paved the way for their heirs to become kings of the three Scandinavian kingdoms. Through marriage with a descendant of King Valdemar I of Sweden and of King Eric IV of Denmark, a claim to Sweden and Denmark was staked as early as 1350.
At that time, the chief competitor to succeed Margaret I of Denmark (1353–1412), queen of Denmark, Sweden, and Norway, to the Northern thrones was the House of Mecklenburg, while other aspirants included the Duke of Saxe-Lauenburg. In 1423, Theodoric of Oldenburg married Hedwig of Holstein, a descendant of King Magnus Ladulås of Sweden, of King Haakon V of Norway, and of the kings Eric V and Abel of Denmark. Their son Christian (the abovementioned) became the king of all three kingdoms of the whole Kalmar Union.
Different Oldenburgine branches have reigned in several countries. The House of Oldenburg was briefly poised to claim the British thrones through the marriage of Queen Anne and Prince George of Denmark and Norway in 1683; however, due to the early deaths of all their children, the crown passed to the House of Hanover, Oldenburgs not gaining that crown until 2022.
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Rulers
Main line
- Counts of Oldenburg (1101–1448, 1667–1773)
- Kings of Denmark (1448–1863)
- Kings of Norway (1450–1814)
- Kings of Sweden (1457–1464, 1497–1501, 1520–1521)
- Dukes of Schleswig (1460–1864) (divided among various rulers 1544–1721)
- Counts (1460–1574) and Dukes (1574–1864) of Holstein (divided among various rulers 1544–1773)
- Dukes of Saxe-Lauenburg (1815–1863)
Branches
- Oldenburg comital line (1448–1667), extinct in 1667
- Schleswig-Holstein-Haderslev (1544–1580), extinct in 1580
- Schleswig-Holstein-Gottorp
- Dukes of Holstein-Gottorp (1544–1739)
- Holstein-Gottorp-Romanov (commonly still called Romanov)
- Dukes of Holstein-Gottorp (1739–1773)
- Emperors of Russia (1762, 1796–1917)
- Holstein-Gottorp (Swedish line), extinct in 1877
- Kings of Sweden (1751–1818)
- King of Norway (1814–1818)
- Holstein-Gottorp (Grand ducal line)
- Dukes and Grand Dukes of Oldenburg (1774–1918)
- Schleswig-Holstein-Sonderburg
- Schleswig-Holstein-Sonderburg-Augustenburg, extinct in 1931
- Dukes of Schleswig-Holstein (claimant in 1863, then titular dukes until 1931)
- Schleswig-Holstein-Sonderburg-Glücksburg (name changed from Schleswig-Holstein-Sonderburg-Beck in 1825)
- Dukes of Schleswig-Holstein (titular dukes since 1931)
- Kings and queens of Denmark (1863–2024)
- Dukes of Saxe-Lauenburg (1863–1864)
- King of Iceland (1918–1944)
- Kings of Norway (1905–present)
- Kings of the Hellenes (1863–1924, 1935–1973)
- Kings of the United Kingdom and other Commonwealth Realms (2022–present)
- Schleswig-Holstein-Sonderburg-Augustenburg, extinct in 1931
- Danneskiold (illegitimate branch)
- Danneskiold-Løvendal, extinct in 1829
- Danneskiold-Laurvig, extinct in 1783
- Danneskiold-Samsøe
Family tree of the House of Oldenburg (Counts of Oldenburg)
Oldenburg descent from the Danish royal line
Family tree of the House of Oldenburg (Senior line)
List of head of the House of Oldenburg
- Main line of Oldenburg (1101–1863, Counts of Oldenburg: 1101–1448, Kings of Denmark: 1448–1863)
- Elimar I (1040–1112, Reign: 1091–1108) – Count of Oldenburg
- Elimar II (1070–1142, Reign: 1108–1142) – Count of Oldenburg
- Christian I (1123–1167, Reign: 1142–1167) – Count of Oldenburg
- Maurice (1145–1209, Reign: 1167–1209) – Count of Oldenburg
- Otto I (1175–1251, Reign: 1209–1251) – Count of Oldenburg
- Christian II (1184–1233, Reign: 1209–1233) – Count of Oldenburg
- John I (1204–1270, Reign: 1233–1270) – Count of Oldenburg
- Christian III (?–1285, Reign: 1270–1285) – Count of Oldenburg
- Otto II (?–1112, Reign: 1272–1278) – Count of Oldenburg
- John II (?–1315, Reign: 1285–1315) – Count of Oldenburg
- Christian IV (?–1323, Reign: 1315–1323) – Count of Oldenburg
- John III (1295–1345, Reign: 1315–1345) – Count of Oldenburg
- Conrad I (?–1347, Reign: 1324–1347) – Count of Oldenburg
- John IV (?–1356, Reign: 1345–1356) – Count of Oldenburg
- Conrad II (?–1401, Reign: 1347–1401) – Count of Oldenburg
- Christian V (1342–1399, Reign: 1368–1398) – Count of Oldenburg
- Maurice II (1381–1420, Reign: 1401–1420) – Count of Oldenburg
- Cristian VI (1394–1421, Reign: 1403–1421) – Count of Oldenburg
- Dietrich (1390–1440, Reign: 1403–1440) – Count of Oldenburg
- Christian I (1426–1481) – Count of Oldenburg (Reign: 1440–1448), King of Denmark (Reign: 1448–1481)
- John (1455–1513, Reign: 1481–1513) – King of Denmark
- Christian II (1481–1559, Reign: 1513–1523) – King of Denmark
- Frederick I (1471–1533, Reign: 1523–1533) – King of Denmark
- Christian III (1503–1559, Reign: 1534–1559) – King of Denmark
- Frederick II (1534–1588, Reign: 1559–1588) – King of Denmark
- Christian IV (1577–1648, Reign: 1588–1648) – King of Denmark
- Frederick III (1609–1670, Reign: 1648–1670) – King of Denmark
- Christian V (1646–1699, Reign: 1670–1699) – King of Denmark
- Frederick IV (1671–1730, Reign: 1699–1730) – King of Denmark
- Christian VI (1699–1746, Reign: 1730–1746) – King of Denmark
- Frederick V (1723–1766, Reign: 1746–1766) – King of Denmark
- Christian VII (1749–1808, Reign: 1766–1808) – King of Denmark
- Frederick VI (1768–1839, Reign: 1808–1839) – King of Denmark
- Christian VIII (1786–1848, Reign: 1839–1848) – King of Denmark
- Frederick VII (1808–1863, Reign: 1848–1863) – King of Denmark
- Schleswig-Holstein-Sonderburg (1863–)
- Schleswig-Holstein-Sonderburg-Augustenburg (1863–1931)
- Christian August II (1798–1869, Reign: 1863–1869) – Duke of Schleswig-Holstein-Sonderburg-Augsthenburg
- Frederick VIII (1829–1880, Reign: 1869–1880) – Duke of Schleswig-Holstein (nominally)
- Ernst Günther II (1863–1921, Reign: 1880–1921) – Duke of Schleswig-Holstein (nominally)
- Albert (1869–1931, Reign: 1921–1931) – Duke of Schleswig-Holstein (nominally)
- Schleswig-Holstein-Sonderburg-Glücksburg (1931–)
- Friedrich Ferdinand (1855–1934, Reign: 1931–1934) – Duke of Schleswig-Holstein (nominally)
- Wilhelm Friedrich (1891–1965, Reign: 1934–1965) – Duke of Schleswig-Holstein (nominally)
- Peter (1922–1980, Reign: 1965–1980) – Duke of Schleswig-Holstein (nominally)
- Christoph (1949–2023, Reign: 1980–2023) – Duke of Schleswig-Holstein (nominally)
- Friedrich Ferdinand (1985–present, Reign: 2023–present) – Duke of Schleswig-Holstein (nominally)
- Schleswig-Holstein-Sonderburg-Augustenburg (1863–1931)
Line of succession
By agnatic primogeniture:
- Frederick I of Denmark (1471–1533)
- Christian III of Denmark (1503–1559)
- John II, Duke of Schleswig-Holstein-Sonderburg (1545–1622)
- Alexander, Duke of Schleswig-Holstein-Sonderburg (1573–1627)
- August Philipp, Duke of Schleswig-Holstein-Sonderburg-Beck (1612–1675)
- Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck (1653–1728)
- Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck (1697–1775)
- Prince Karl Anton August of Schleswig-Holstein-Sonderburg-Beck (1727–1759)
- Friedrich Karl Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck (1757–1816)
- Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (1785–1831)
- Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (1814–1885)
- Friedrich Ferdinand, Duke of Schleswig-Holstein (1855–1934)
- Wilhelm Friedrich, Duke of Schleswig-Holstein (1891–1965)
- Peter, Duke of Schleswig-Holstein (1922–1980)
- Christoph, Prince of Schleswig-Holstein (1949–2023)
- Friedrich Ferdinand, Prince of Schleswig-Holstein (b. 1985)
- (1) Alfred, Hereditary Prince of Schleswig-Holstein (b. 2019)
- (2) Prince Albert of Schleswig-Holstein (b. 2020)
- (3) Prince Constantin of Schleswig-Holstein (b. 1986)
- (4) Prince Tassilo of Schleswig-Holstein (b. 2023)
- (5) Prince Leopold of Schleswig-Holstein (b. 1991)
- Friedrich Ferdinand, Prince of Schleswig-Holstein (b. 1985)
- (6) Prince Alexander of Schleswig-Holstein (b. 1953)
- (7) Prince Julian of Schleswig-Holstein (b. 1997)
- Christoph, Prince of Schleswig-Holstein (1949–2023)
- Peter, Duke of Schleswig-Holstein (1922–1980)
- Wilhelm Friedrich, Duke of Schleswig-Holstein (1891–1965)
- Friedrich Ferdinand, Duke of Schleswig-Holstein (1855–1934)
- Christian IX of Denmark (1818–1906)
- Frederick VIII of Denmark (1843–1912)
- Christian X of Denmark (1870–1947)
- Knud, Hereditary Prince of Denmark (1900–1976)
- (8) Count Ingolf of Rosenborg (b. 1940)
- Knud, Hereditary Prince of Denmark (1900–1976)
- Haakon VII of Norway (1872–1957)
- Olav V of Norway (1903–1991)
- Harald V of Norway (1937–2026)
- (9) Haakon VIII of Norway (b. 1973)
- (10) Prince Sverre Magnus of Norway (b. 2005)
- (9) Haakon VIII of Norway (b. 1973)
- Harald V of Norway (1937–2026)
- Olav V of Norway (1903–1991)
- Prince Harald of Denmark (1876–1949)
- Count Oluf of Rosenborg (1923–1990)
- (11) Count Ulrik of Rosenborg (b. 1950)
- (12) Count Philip of Rosenborg (b. 1986)
- (11) Count Ulrik of Rosenborg (b. 1950)
- Count Oluf of Rosenborg (1923–1990)
- Christian X of Denmark (1870–1947)
- George I of Greece (1845–1913)
- Constantine I of Greece (1868–1923)
- Paul of Greece (1901–1964)
- Constantine II of Greece (1940–2023)
- (13) Pavlos, Crown Prince of Greece (b. 1967)
- (14) Prince Constantine Alexios of Greece and Denmark (b. 1998)
- (15) Prince Achileas Andreas of Greece and Denmark (b. 2000)
- (16) Prince Odysseas Kimon of Greece and Denmark (b. 2004)
- (17) Prince Aristide Stavros of Greece and Denmark (b. 2008)
- (18) Prince Nikolaos of Greece and Denmark (b. 1969)
- (19) Prince Philippos of Greece and Denmark (b. 1986)
- (13) Pavlos, Crown Prince of Greece (b. 1967)
- Constantine II of Greece (1940–2023)
- Paul of Greece (1901–1964)
- Prince Andrew of Greece and Denmark (1882–1944)
- Prince Philip, Duke of Edinburgh (1921–2021)
- (20) Charles III of the United Kingdom (b. 1948)
- (21) William, Prince of Wales (b. 1982)
- (22) Prince George of Wales (b. 2013)
- (23) Prince Louis of Wales (b. 2018)
- (24) Prince Harry, Duke of Sussex (b. 1984)
- (25) Prince Archie of Sussex (b. 2019)
- (21) William, Prince of Wales (b. 1982)
- (26) Andrew Mountbatten-Windsor (b. 1960)
- (27) Prince Edward, Duke of Edinburgh (b. 1964)
- (28) James Mountbatten-Windsor, Earl of Wessex (b. 2007)
- (20) Charles III of the United Kingdom (b. 1948)
- Prince Philip, Duke of Edinburgh (1921–2021)
- Constantine I of Greece (1868–1923)
- Prince Valdemar of Denmark (1858–1939)
- Prince Axel of Denmark (1888–1964)
- Count Flemming of Rosenborg (1922–2002)
- (29) Count Axel of Rosenborg (b. 1950)
- (30) Count Carl Johan of Rosenborg (b. 1979)
- (31) Count Valdemar of Rosenborg (b. 2014)
- (32) Count Alexander Flemming of Rosenborg (b. 1993)
- (30) Count Carl Johan of Rosenborg (b. 1979)
- (33) Count Birger of Rosenborg (b. 1950)
- (34) Count Carl Johan of Rosenborg (b. 1952)
- (29) Count Axel of Rosenborg (b. 1950)
- Count Flemming of Rosenborg (1922–2002)
- Prince Erik, Count of Rosenborg (1890–1950)
- Count Christian of Rosenborg (1932–1997)
- (35) Count Valdemar of Rosenborg (b. 1965)
- (36) Count Nicolai of Rosenborg (b. 1997)
- (35) Count Valdemar of Rosenborg (b. 1965)
- Count Christian of Rosenborg (1932–1997)
- Prince Axel of Denmark (1888–1964)
- Frederick VIII of Denmark (1843–1912)
- Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (1814–1885)
- Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg (1785–1831)
- Friedrich Karl Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck (1757–1816)
- Prince Karl Anton August of Schleswig-Holstein-Sonderburg-Beck (1727–1759)
- Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck (1697–1775)
- Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck (1653–1728)
- August Philipp, Duke of Schleswig-Holstein-Sonderburg-Beck (1612–1675)
- Alexander, Duke of Schleswig-Holstein-Sonderburg (1573–1627)
- John II, Duke of Schleswig-Holstein-Sonderburg (1545–1622)
- Adolf, Duke of Holstein-Gottorp (1526–1586)
- John Adolf, Duke of Holstein-Gottorp (1575–1616)
- Frederick III, Duke of Holstein-Gottorp (1597–1659)
- Christian Albert, Duke of Holstein-Gottorp (1641–1695)
- Frederick IV, Duke of Holstein-Gottorp (1671–1702)
- Charles Frederick, Duke of Holstein-Gottorp (1700–1739)
- Peter III of Russia (1728–1762)
- Paul I of Russia (1728–1762)
- Nicholas I of Russia (1796–1855)
- Alexander II of Russia (1818–1881)
- Grand Duke Paul Alexandrovich of Russia (1860–1919)
- Grand Duke Dmitri Pavlovich of Russia (1891–1941)
- Prince Paul Dimitrievich Romanovsky-Ilyinsky (1928–2004)
- (37) Prince Dimitri Pavlovich Romanovsky-Ilyinsky (b. 1954)
- (38) Prince Michael Pavlovich Romanovsky-Ilyinsky (b. 1961)
- Prince Paul Dimitrievich Romanovsky-Ilyinsky (1928–2004)
- Grand Duke Dmitri Pavlovich of Russia (1891–1941)
- Grand Duke Paul Alexandrovich of Russia (1860–1919)
- Grand Duke Michael Nicolaevich of Russia (1832–1909)
- Grand Duke Alexander Mikhailovich of Russia (1866–1933)
- Prince Andrei Alexandrovich of Russia (1897–1981)
- Andrew Andreevich, Prince of Russia (1923–2021)
- (39) Alexis Andreevich, Prince of Russia (b. 1953)
- (40) Prince Peter Andreevich of Russia (b. 1961)
- (41) Prince Andrew Andreevich of Russia (b. 1963)
- Andrew Andreevich, Prince of Russia (1923–2021)
- Prince Rostislav Alexandrovich of Russia (1902–1978)
- Prince Rostislav Rostislavovich of Russia (1938–1999)
- (42) Prince Rostislav Rostislavovich of Russia (b. 1985)
- (43) Prince Nikita Rostislavovich of Russia (b. 1987)
- Prince Nicholas Rostislavovich of Russia (1945–2000)
- (44) Prince Nicholas Nicolaevich of Russia (b. 1968)
- (45) Prince Daniel Nicolaevich of Russia (b. 1972)
- (46) Prince Jackson Daniel Danielaevich of Russia (b. 2009)
- Prince Rostislav Rostislavovich of Russia (1938–1999)
- Prince Andrei Alexandrovich of Russia (1897–1981)
- Grand Duke Alexander Mikhailovich of Russia (1866–1933)
- Alexander II of Russia (1818–1881)
- Nicholas I of Russia (1796–1855)
- Paul I of Russia (1728–1762)
- Peter III of Russia (1728–1762)
- Charles Frederick, Duke of Holstein-Gottorp (1700–1739)
- Prince Christian August of Holstein-Gottorp (1673–1726)
- Prince Georg Ludwig of Holstein-Gottorp (1719–1763)
- Peter I, Grand Duke of Oldenburg (1755–1829)
- Augustus, Grand Duke of Oldenburg (1783–1853)
- Peter II, Grand Duke of Oldenburg (1827–1900)
- Frederick Augustus II, Grand Duke of Oldenburg (1852–1931)
- Nikolaus, Hereditary Grand Duke of Oldenburg (1897–1970)
- Anton Günther, Duke of Oldenburg (1923–2014)
- (47) Christian, Duke of Oldenburg (b. 1955)
- (48) Alexander, Hereditary Duke of Oldenburg (b. 1990)
- (49) Duke Philipp of Oldenburg (b. 1991)
- (50) Duke Anton Friedrich of Oldenburg (b. 1993)
- (47) Christian, Duke of Oldenburg (b. 1955)
- Duke Peter of Oldenburg (1926–2016)
- (51) Duke Nikolaus of Oldenburg (b. 1955)
- (52) Duke Christoph of Oldenburg (b. 1985)
- (53) Duke Georg of Oldenburg (b. 1990)
- (54) Duke Oscar of Oldenburg (b. 1991)
- (51) Duke Nikolaus of Oldenburg (b. 1955)
- Duke Friedrich August of Oldenburg (1936–2017)
- (55) Duke Paul-Wladimir of Oldenburg (b. 1969)
- (56) Duke Kirill of Oldenburg (b. 2002)
- (57) Duke Carlos of Oldenburg (b. 2004)
- (58) Duke Paul of Oldenburg (b. 2005)
- (59) Duke Louis of Oldenburg (b. 2012)
- (55) Duke Paul-Wladimir of Oldenburg (b. 1969)
- (60) Duke Huno of Oldenburg (b. 1940)
- Duke Johann of Oldenburg (1940–2025)
- (61) Duke Konstantin Nikolaus of Oldenburg (b. 1975)
- Anton Günther, Duke of Oldenburg (1923–2014)
- Nikolaus, Hereditary Grand Duke of Oldenburg (1897–1970)
- Frederick Augustus II, Grand Duke of Oldenburg (1852–1931)
- Peter II, Grand Duke of Oldenburg (1827–1900)
- Augustus, Grand Duke of Oldenburg (1783–1853)
- Peter I, Grand Duke of Oldenburg (1755–1829)
- Prince Georg Ludwig of Holstein-Gottorp (1719–1763)
- Frederick IV, Duke of Holstein-Gottorp (1671–1702)
- Christian Albert, Duke of Holstein-Gottorp (1641–1695)
- Frederick III, Duke of Holstein-Gottorp (1597–1659)
- John Adolf, Duke of Holstein-Gottorp (1575–1616)
- Christian III of Denmark (1503–1559)

