Jurij Slatkonja was a choirmaster for which State of the Holy Roman Empire?
Duchy of Carniola The Duchy of Carniola (Slovene: "Vojvodina Kranjska" , German: "Herzogtum Krain" ) was a State of the Holy Roman Empire, established under Habsburg rule on the territory of the former East Frankish March of Carniola in 1364. A hereditary land of the Habsburg Monarchy, it became a constituent land of the Austrian Empire in 1804 and part of the Kingdom of Illyria until 1849. A separate crown land from 1849, it was incorporated into the Cisleithanian territories of Austria-Hungary from 1867 until the state's dissolution in 1918. Its capital was Ljubljana.
Lordship of Rostock The Lordship or Principality of Rostock (German: "Herrschaft (Fürstentum) Rostock" ) was a state of the Holy Roman Empire in the 13th and early 14th centuries. It arose from the first partition of Mecklenburg after the death of Henry Borwin II in 1227. It was named after the castle and settlement of Rostock and held the territories of Kessin, Kröpelin, Doberan, Ribnitz, Marlow, Sülze and Tessin in the modern German "Bundesland" (Federal State) of Mecklenburg-Vorpommern. Later, in 1236 Gnoien and Kalen were added to the lordship's territory.