Barnim III
Duke of Pomerania-Stettin (1344-1368)
Barnim III the Great (c. 1300 – 14 August 1368) was a Pomeranian duke from the House of Griffin.
Life
He ruled Pomerania-Stettin in the years 1344–1368, although he had been a co-regent of his father Otto I since 1320, taking a prominent part in the defence and government of the duchy. Aiming for independence from the Margraviate of Brandenburg, he allied himself with Poland and Bohemia. In 1338, Brandenburg relinquished supremacy over Pomerania, and in 1348 Charles IV recognized the duchy as a fiefdom of the Holy Roman Empire, which helped to protect it from the Brandenburg margraves. The civil war in Brandenburg in the years 1349–1354 allowed Barnim III to extend his duchy by conquest. He was first dux Cassuborum Duke of Kashubians.
Marriage and issue
Barnim III married Agnes (c. 1318 – before or in 1371), a daughter of Duke Henry II of Brunswick-Grubenhagen. They had four children:
Otto (d. 1337)
Casimir III (1348 – 24 August 1372)
Swantibor III (c. 1351 – 21 June 1413)
Bogislaw VII (before 1366 – 1404)
Ancestry
See also
List of Pomeranian duchies and dukes
History of Pomerania
Duchy of Pomerania
House of Pomerania
External links
Barnim III (in German)
Attribution:
Chisholm, Hugh, ed. (1911).
The public source identifies “Barnim III” as duke of Pomerania-Stettin (1344-1368). This brief keeps that definition visible, then builds a research path around Barnim, Duke and Pomerania-Stettin.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 6, 2026. The linked authority identifier is Q572065. VIAF identifies the subject as 90991096. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1300, 1368, 1344 and 1320.
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This entry incorporates text from “Barnim III” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.