Bernhard III, Prince of Anhalt-Bernburg (died 20 August 1348) was a German prince of the House of Ascania and ruler of the principality of Anhalt-Bernburg.
He was the eldest son of Bernhard II, Prince of Anhalt-Bernburg, by his wife Helene, daughter of Wizlaw II, Prince of Rügen.
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Life
Bernhard succeeded his father as ruler of Anhalt-Bernburg after his death in 1323. His two younger brothers renounced their rights in order to become priests, which left Bernhard as sole ruler of Bernburg. Along with his princely title, he also used the styles "Count of Askanien" and "Lord of Bernburg".
Marriages and children
In 1328 Bernhard married Agnes (c. 1310 – 4 January 1338), daughter of Rudolph I, Elector of Saxony and Duke of Saxe-Wittenberg. Her paternal grandmother and namesake Agnes of Habsburg was a daughter of Rudolph I, King of the Romans. The spouses were third cousins: Agnes's great-grandfather Albert I, Duke of Saxony, was a brother of Henry I, Count of Anhalt, Bernhard's great-grandfather.
Bernhard and Agnes had five children:
Bernhard IV, Prince of Anhalt-Bernburg (died 28 June 1354)
Katharina (c. 1330 – 30 January 1390), first married on 6 October 1356 to Magnus II, Duke of Brunswick-Lüneburg, then secondly on 11 May 1374 to Albert of Saxe-Wittenberg, Duke of Lüneburg