2 Answers

In Middle Ages the name Wends (Venedi or Venedae, taken from Jordanes and Tacitus) was applied to Western Slavic peoples, most often those living in the Holy Roman Empire.^{[citation needed][clarification needed]} Mieszko I, the first historical ruler of Poland, also appeared^{[clarification needed]} as "Dagome, King of the Wends" (Old Norse Vindakonungr).

The early Slavic expansion began in the 5th century, and by the 6th century, the groups that would become the West, East and South Slavic groups had probably become geographically separated. The first independent West Slavic states originate beginning in the 7th century, with the Empire of Samo (623 - 658), the Principality of Moravia (8th c. - 833), the Principality of Nitra (8th c. - 833) and Great Moravia (833 - c. 907). The Sorbs and other Polabian Slavs like Obodrites and Veleti came under the domination of the Holy Roman Empire after the Wendish Crusade^[5] in the Middle Ages and had been strongly Germanized by Germans at the end of 19th century. The Polabian language survived until the beginning of the 19th century in what is now the German state of Lower Saxony.^[6] To this day survived only 60.000 of Sorbs living predominantly in Lusatia, a region on the territory of modern Germany in the states of Brandenburg and Saxony.^[7]

The central Polish tribe of the Polans created their own state in the 10th century under the Polish duke Mieszko I. For many centuries Poland has had close ties with its western neighbours, with the Polish ruler Boles?aw I the Brave declared by Holy Roman Emperor Otto III as Frater et Cooperator Imperii ("Brother and Partner in the Empire")^[8]. During the 18th century some of the Poles (living in Austrian Galicia) became subjects/citizens of the Habsburg monarchy (which ruled the area until 1918). The precursors of the Czechs (i.e. Bohemians) migrated into Bohemia in the late 6th century and had established various fiefdoms by the 10th century when their rulers eventually became vassals (1002) of the Holy Roman Emperors. Kingdom of Bohemia stayed part of that Empire between 1002–1419 and 1526–1918. Predecessors of Slovaks came under Hungarian domination after 907 (doom of the Great Moravia) – together with other Slavic groups as Croats, Slovenians, Dalmatians and Rusyns. Both the Czechs and the Slovaks were under rule of the Habsburg monarchy from 1526 to 1804; then in the Austrian Empire and between 1867–1918 part of Austria-Hungary.

Short answer: Carantania, the first Slovenian and the first Slavic state, which was first mentioned in 595. My Maternal grandparents were Slovakian.