Nameisis

Nameisis was mentioned for the first time in 1272 when he was one of Semigallian nobles who signed a peace treaty with the Livonian Order and the Archbishop of Riga.Nameisis made an alliance with Traidenis, Grand Duke of Lithuania, recognizing him as his suzerain, and managed to defeat the Livonian garrison in the Tērvete castle.[1] In short time, Semigallians captured other castles and the crusaders were forced to leave Semigallia, except the Mežotne hillfort.The attack failed because the crusaders managed to summon a great force of their Latgalian allies and set up defensive positions in front of the city.However, the Semigallians managed to capture several prisoners, including order's marshal who was sent to duke Traidenis and eventually killed in Kernave.
SemigalliaRiga CastleSemigallianTērveteLatviaLivonian Ordermilitary orderLivonian Rhymed ChroniclehistoriographyArchbishop of RigaBattle of AizkraukleTraidenisGrand Duke of LithuaniasuzerainDobeleLatgalianKernaveDobele CastleChristburgEast PrussiaVisuotinė lietuvių enciklopedija