What is the name of the Baltic tribe duke known as King Vester?
Semigallians Semigallians (Latvian "Zemgaļi"; Lithuanian: "Žiemgaliai" , also Zemgalians, Semigalls, Semigalians) were the Baltic tribe that lived in the southcentral part of contemporary Latvia and northern Lithuania. They are noted for their long resistance (1219–1290) against the German crusaders and Teutonic Knights during the Northern Crusades.
Vistula Veneti The term Vistula Veneti (or Baltic Veneti) has been used in modern times to distinguish the Veneti noted by Greek and Roman geographers along the Vistula and the Bay of Gdańsk from other tribes around them and other tribes of the same name elsewhere such as the Adriatic Veneti (about the same area of today's Veneto), the Veneti of Brittany, and the so-called Paphlagonian Veneti (of today's northern Turkey coast). They are one of the tribes that are suspected as the ancestors of some or all of today's Slavs.