The Western Baltic culture (Lithuanian: Vakarų baltų kultūra; Polish: Kultura zachodniobałtyjska also known as krąg zachodniobałtyjski (West Baltic circle), Russian: Западнобалтская культура, romanized: Zapadnobaltskaya kul'tura) was the westernmost branch of the Balts, representing a distinct archaeological culture of the Bronze Age and Iron Age, along the southern coast of the Baltic Sea. It is a zone of several small archaeological cultures that were ethnically Baltic and had similar cultural features (e.g. similar monuments or some features of the funeral rite). They included tribes such as the Old Prussians, Galindians, Yotvingians (or Sudovians) and Skalvians, in addition to the little-known Pomeranian Balts or Western Balts proper, in the area now known as Pomerania.
HINT:
Western Balts in the context of Sudovians
Yotvingians, also called Sudovians, Jatvians, or Jatvingians, were a Western Baltic people who were closely tied to the Old Prussians. The linguist Petras Būtėnas once asserted that they were closest to the Lithuanians. The Yotvingians contributed to the formation of the Lithuanian state.
View the full Wikipedia page for Sudovians