Peter I, Grand Duke of Oldenburg
| Peter I | |||||
|---|---|---|---|---|---|
| Grand Duke of Oldenburg | |||||
| Reign | 2 July 1823 – 21 May 1829 | ||||
| Predecessor | William I | ||||
| Successor | Augustus I | ||||
| Born | 17 January 1755 Riesenburg, Prussia (now Poland) | ||||
| Died | 21 May 1829 (aged 74) Wiesbaden, Duchy of Nassau (now Germany) | ||||
| Burial | Ducal Mausoleum, Gertrudenfriedhof, Oldenburg | ||||
| Spouse | Duchess Frederica of Württemberg | ||||
| Issue | |||||
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| House | House of Holstein-Gottorp | ||||
| Father | Prince Georg Ludwig of Holstein-Gottorp | ||||
| Mother | Princess Sophie Charlotte of Schleswig-Holstein-Sonderburg-Beck | ||||
| Religion | Lutheranism | ||||
Peter I or Peter Frederick Louis of Holstein-Gottorp (German: Peter Friedrich Ludwig von Holstein-Gottorp) (17 January 1755 – 21 May 1829) was the Regent of the Duchy of Oldenburg for his incapacitated cousin William I from 1785 to 1823, and then served himself as Duke from 1823 to 1829.
He also served from 1785 to 1803 as the last Lutheran Prince-Bishop of Lübeck, until that Prince-Bishopric was secularized and joined to Oldenburg. His son, Augustus, was the first Duke of Oldenburg to use the style of Grand Duke that was granted in 1815.