Anton-Günther, Duke of Oldenburg (Anton-Günther Friedrich August Wilhelm Josias von Holstein-Gottorp, Erbgroßherzog von Oldenburg, Prinz von Lübeck; 16 January 1923 – 20 September 2014) was the head of the Grand Ducal Family of Oldenburg.
He studied for a Diploma in Forestry and succeeded as head of the Grand Ducal Family of Oldenburg upon the death of his father, the Hereditary Grand Duke, on 3 April 1970. He died in September 2014 aged 91.[1]
The ancestral home of the House of Oldenburg is Oldenburg castle, nowadays a museum owned by the state. Private seats of the Duke of Oldenburg are Rastede Palace near Oldenburg and Güldenstein Manor, Harmsdorf, in Schleswig-Holstein. Eutin Castle in Schleswig-Holstein is a museum owned by a family foundation set up by Duke Anton-Günther.