House of Holstein-Gottorp-Oldenburg
Cadet branch of the House of Holstein-Gottorp
- Coat of Arms
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House of Holstein-Gottorp-Oldenburg
Dukes of Oldenburg
Princes of Eutin and Lübeck -
House of Holstein-Gottorp-Oldenburg
Grand Dukes of Oldenburg
From 1815 -
House of Holstein-Gottorp-Oldenburg
Grand Dukes of Oldenburg
Small arms
- Additional Arms
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House of Holstein-Gottorp-Oldenburg
Arms as Princes of Birkenfeld -
House of Holstein-Gottorp-Oldenburg
Arms as Princes of Lübeck
- Cadet Branches
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House of Osternburg
Counts of Osternburg
Morganatic branch issued from Nikolaus, eldest son of Peter, Duke of Oldenburg and great-grandson of Peter I, Grand Duke of Oldenburg through his 2nd son Konstantin Friedrich -
House of Zarnekau
Counts of Zarnekau
Morganatic branch issued from Constantine Petrovich, younger son of Peter, Duke of Oldenburg and great-grandson of Peter I, Grand Duke of Oldenburg through his 2nd son Konstantin Friedrich
Russian branch -
House of Welsburg
Counts of Welsburg
Morganatic branch issued from Elimar, son of Augustus, Grand Duke of Oldenburg from his 3rd marriage
