Ernest III, Duke of Brunswick-Grubenhagen

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Ernest III, Duke of Brunswick-Grubenhagen
Ernest III, by Cranach, Museum of Fine Arts, Reims
Born	(1518-12-17)17 December 1518 Osterode am Harz
Died	2 April 1567(1567-04-02) (aged 48) Herzberg am Harz
Spouse	Princess Margaret of Pomerania-Wolgast
Issue	Elisabeth
House	House of Guelph
Father	Philip I, Duke of Brunswick-Grubenhagen
Mother	Countess Catherine of Mansfeld-Vorderort

Ernest III of Brunswick-Grubenhagen-Herzberg (by a different counting: Ernest IV; 17 December 1518 in Osterode am Harz – 2 April 1567 in Herzberg Castle, Herzberg am Harz), was a member of the noble family of Guelph and a duke of Brunswick-Grubenhagen.