Karijotas
Karijotas or Koriat was the duke of Navahrudak and Vawkavysk. A member of the House of Gediminas, he was one of the sons of Gediminas, the grand duke of Lithuania.
Life
According to Polish historian Jan Tęgowski, he was born probably between 1305 and 1308. He was baptized before 1349.In 1349, Algirdas sent him along with two sons, Aikštas or Eikšis from Eišiškės and Simeon from Svislach, to Jani Beg, Khan of the Golden Horde, to negotiate an alliance against the Teutonic Knights and the rising northeastern Rus' principality of Moscow. However, Jani Beg handed Karijotas over to Simeon of Moscow for a ransom.
Karijotas' date of death is uncertain; he is last mentioned in writing in the 1358 treaty between the dukes of Mazovia and Kestutitis and his brothers, but not anymore in 1366, where that would have been expected. It is therefore likely that Karijotas died between 1358 and 1366. An undated document provides for the division of Navahrudak between Vaidotas and Tautvilas, sons of Kęstutis, probably between 1358 and 1362. The reason is that Vaidotas was captured by the Teutonic Knights in his unsuccessful defence of Kaunas Castle in 1362. It is also unlikely that Vaidotas ever returned to Lithuania after 1362, or that he inherited lands in Navahrudak before Karijotas' death; therefore Karijotas likely died in or before 1362.