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The Treaty of Pyritz settled claims of the House of Pomerania and the House of Hohenzollern regarding the legal status and succession in the Duchy of Pomerania on 26 and 28 March 1493.〔Heitz (1995), p.202〕 John Cicero, Elector of Brandenburg of the Hohenzollern renounced the Electorate of Brandenburg's claims to hold the Pomeranian duchy as a fief on 26 March in Pyritz (now Pyrzyce).〔Materna (1995), p.227〕 In turn, Bogislaw X, Duke of Pomerania acknowledged Brandenburgian succession in his duchy in case of the extinction of his dynasty on 28 March in Königsberg (now Kaliningrad).〔 The treaty was the most important achievement of Bogislaw X's foreign policy.〔Schleinert (2007), p.37〕 It was confirmed and amended when a final settlement between the two houses was reached in the Treaty of Grimnitz in 1529.〔 ==Background== In the 15th century, a longstanding conflict between the Electorate of Brandenburg and the Duchy of Pomerania had flared up again: Brandenburg, then ruled by the House of Hohenzollern, claimed the Pomeranian duchy as a fief, while the House of Pomerania ("Griffins") claimed Imperial immediacy.〔Heitz (1995), pp.188ff〕 The frontier between the realms of the two houses was also disputed, and the conflict was often fought out in open war.〔 In 1464, the dispute escalated due to the death of Otto III, Duke of Pomerania: Otto III had died without issue, and left his partition of Pomerania, the Duchy of Pomerania-Stettin vacated.〔Buchholz (1999), p.183〕 Both his relatives from the House of Pomerania and the Hohenzollern claimed succession.〔 In the Treaty of Soldin (1466), the Pomeranian dukes and Brandenburgian electors settled for a scenario where the House of Pomerania would rule Pomerania-Stettin as a Brandenburgian fief.〔Heitz (1995), p.194〕 Yet, this treaty did not come into effect, and the two houses again resorted to warfare.〔Heitz (1995), pp.195-200〕 The war was temporarily ended with the Treaty of Prenzlau (1472), when the House of Pomerania had to accept Brandenburgian overlordship and succession as well as territorial losses, but flared up again in 1477.〔Heitz (1995), p.200〕 Brandenburg was able to decide the war in her favour, and Bogislaw X, meanwhile the sole Pomeranian duke after his co-rulers had died in 1464, 1474 and 1478, had to accept and renew the treaty of 1472 in the Treaty of Prenzlau (1479).〔Heitz (1995), pp.200-201〕 While in 1479 Bogislaw X had pledged allegiance to Albrecht III, Elector of Brandenburg, he refused to do so to his son, John Cicero, when the latter succeeded in the Brandenburgian electorate.〔 Margarethe, a daughter of Frederick II, Elector of Brandenburg and married to Bogislaw X since 1477, sided with her husband in the feud despite maintaining good relations to her cousin, John Cicero.〔Stafford (2001), p.182〕 Yet, Bogislaw X's marriage with Margarethe was not blessed with children.〔 Bogislaw X accused her that she had manipulated her body to prevent conception, so the Pomeranian duchy would fall to Brandenburg according to the treaties of Prenzlau.〔Rogge (2004), p.78〕 Margarethe died in 1489.〔Heitz (1995), p.278〕 In 1490 Bogislaw married Anna Jagiellon of Poland,〔Schleinert (2007), p.54〕 but, though Anna was pregnant, no heir was born yet by the time the treaty of Pyritz was concluded.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Treaty of Pyritz」の詳細全文を読む スポンサード リンク
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