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Traidenis
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<p>Traidenis was <a href="/facts/List_of_Lithuanian_monarchs/MLswfAu9">Grand Duke of Lithuania</a> from 1269 or 1270 until 1282. He is the second most prominent grand duke of Lithuania in the 13th century after <a href="/facts/Mindaugas/5oEk6Dag">Mindaugas</a>. His reign ended a seven-year unrest period after Mindaugas was assassinated in 1263 and firmly established the Grand Duchy as a <a href="/facts/Lithuanian_mythology/RmPx0Lkv">pagan</a> state for another hundred years. </p><p>Traidenis expanded the Grand Duchy into the territories of <a href="/facts/Sudovians/72HujoTc">Sudovians</a> and <a href="/facts/Semigalians/LQlBJXGk">Semigalians</a> and strengthened its presence in <a href="/facts/Black_Ruthenia/c1Haa8yv">Black Ruthenia</a>. Unlike Mindaugas, Traidenis did not concentrate on expansion into the east. </p>