Derrick or
Dietrich of Oldenburg, latin-based anglicization also
Theoderic of Oldenburg (c. 1398–
February 14,
1440), nicknamed
Theoderic the Lucky or
the Fortunate (Teudericus Fortunatus), was a feudal lord in northern
Germany, holding the counties of
Delmenhorst and
Oldenburg. He was called "Fortunatus" as he was able to secure Delmenhorst for his branch of the Oldenburgs.
Dietrich is the father of Christian I of Denmark, a male-line ancestor to the present-day Danish throne under Margaret II of Denmark.
Lineage
He was the son of Count
Christian V of Oldenburg (who became count in about 1398 and died in 1423) and his wife Countess
Agnes of Honstein. His grandfather, Count
Conrad I of Oldenburg (d. approx. 1368) had left his lands divided between his father and his uncle Conrad II.
His father Christian V managed to gain the upper hand when Conrad II's son Maurice IV died in 1420. After this, most of Oldenburg family patrimony was under the power of Theodoric's branch. However, the house had several minor branches who had estates and claims, as was usual in any medieval fief.
Theoderic of Oldenburg was the grandson of Ingeborg of Itzehoe, a Holstein princess who had married count Conrad I of Oldenburg. After the death of her only brother, Count Gerhard V of Holstein-Itzehoe-Plön, in 1350, Ingeborg and her issue were the heirs of Ingeborg's grandmother Ingeborg of Sweden (d. about 1290, first wife of Gerhard II of Plön-Itzehoe), the eldest daughter of King Valdemar of Sweden and Queen Sophia, who herself was the eldest daughter of the sonless King Eric IV of Denmark and his wife Jutta of Saxony. Since other legitimate heirs of king Valdemar apparently were extinct at this time, Theoderic was regarded to have been the Heir-General of kings Valdemar I of Sweden and Eric IV of Denmark.
Theodoric succeeded his father as head of the house in 1423.
Marriages and children
He had firstly, as a child, married (for reasons of succession and uniting the hereditary fiefs) a distant cousin, Countess Adelheid of Oldenburg-Delmenhorst (who is said to have died already in 1404), daughter of Oldenburg Count Otto IV of Delmenhorst, and in 1423 he married for a second time,
Helvig of Schauenburg (born in about 1398-1400, died 1436), widow of Prince Balthasar of Mecklenburg and daughter of the murdered Duke Gerhard VI of Schleswig-Holstein and his wife
Elisabeth of Brunswick, thus sister of the reigning Duke
Adolf VIII. All his legitimate children were born of the second wife.
His second marriage strengthened this interest in Scandinavian monarchies, since Helvig was a descendant of King Eric V of Denmark, King Haakon V of Norway and King Magnus I of Sweden.
At this time, all Scandinavia lived under the Kalmar Union erected by Queen Margaret I of Denmark. In 1387 she had lost her own heir Olav IV of Norway, the new heirs now being Eric of Pomerania, and his sister Catherine who was married with a prince of the Palatinate and Bavaria.
Count Theodoric of Oldenburg is said to have been a rival claimant to the crowns of Sweden and Denmark during the reign of Eric VII/ Eric XIII, whose succession was through Christopher I of Denmark, the younger brother of the murdered Eric IV, and through Magnus I of Sweden, younger brother of the deposed King Valdemar.
Count Theodoric had three surviving sons and one daughter:
- Christian (1426-1481), who succeeded him as Count of Oldenburg and Delmenhorst, and became later King Christian I of Denmark, Norway and Sweden, as well as Duke of Schleswig and Holstein.
- Maurice (1428-1464); when his elder brother became king, he was given the County of Delmenhorst.
- Gerhard (1430-1500); when his eldest brother had become king, he was given the county of Oldenburg, and from his other brother's heirs he also inherited Delmenhorst in about 1483. The third son got his name from usages of the mother's Holstein clan.
- Adelheid (1425-1475), first married count Ernest III of Hohnstein (d. 1454) and then in 1474 Count Gerhard VI of Mansfeld (d. 1492).
Male Line of Descendants
Dietrich of Oldenburg is a direct ancestor to the
British royal family and, ultimately,
Elizabeth II,
Queen of the
United Kingdom of
Great Britain and
Northern Ireland. In fact, if one is to follow the paternal ancestry, one would find that following only
Prince William's male ancestry, Dietrich is the direct patrilineal ancestor to William (see below). Dietrich is also the patrilineal ancestor to the last Russian czars of
Romanov-Holstein-Gottorp as well. Dietrich is also the patrilineal ancestor to the
Norwegian royal family and, ultimately, Harald V of Norway. The Norwegian line splits off the British line at
Christian IX of Denmark, who was the father of both
George I of Greece and
Frederick VIII of Denmark.
- Conrad I of Oldenburg
- Christian V of Oldenburg
- Dietrich of Oldenburg
- Christian I, King of Denmark
- Frederick I, King of Denmark
- Christian III, King of Denmark
- Johann II, Duke of Schleswig-Holstein-Sonderburg-Plon
- Alexander, Duke of Schleswig-Holstein-Sonderburg
- August Philipp, Duke of Schleswig-Holstein-Beck
- Frederick Louis of Holstein-Sonderburg-Beck
- Peter August, Duke of Schleswig-Holstein-Sonderburg-Beck
- Karl Anton August, Duke of Schleswig-Holstein-Sonderburg-Beck
- Friedrich Karl Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck
- Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg
- Christian IX, King of Denmark
- George I, King of the Hellenes
- Prince Andrew of Greece
- His Royal Highness The Duke of Edinburgh, Prince Philip
- His Royal Highness The Prince Charles, Prince of Wales, Duke of Cornwall, Duke of Rothesay
- His Royal Highness The Prince William, Prince of the United Kingdom of Great Britain and Northern Ireland
The Norwegian line splits off of Christian IX here:
Dietrich therefore is a great(x15)-grandfather of William, who is currently second in line for the British throne. He is also a great(x16)-grandfather of Ingrid, who is currently second in line for the Norwegian throne.
Eventually, he would become the ancestor of every royal family in Europe through Christian I, Frederick I, Christian IX, and Alexandra of Denmark.
Notes
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