Wilhelm, Duke of Oldenburg

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Peter Friedrich Wilhelm, born 3 January 1754, died 1823. He succeeded his father, Friedrich August, Duke of Holstein-Oldenburg as the Duke of Oldenburg in 1785. His mother was Ulrika Friederike Wilhelmine of Hesse-Kassel.

The title became a Grand Duchy in 1815, but Wilhelm never used the elevated style. It was not used until 1829 by the son of Wilhelm's cousin and successor, Peter I. [1]

Preceded by Friedrich August

Duke of Oldenburg 1785-1823

Succeeded by Peter