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 rising Grand Duchy of Moscow. However, Jani Beg handed Karijotas over to Simeon of Russia for a ransom.
