including the capital city of Klagenfurt. The Entente powers decided on a two-stage referendum, of which the first stage, the Carinthian Plebiscite was held on 10 October 1920 to determine the fate of Carinthia. The outcome in favour of Austria did not change the borders as decided upon in the Treaty of Saint-Germain. The Austrian part of the former duchy today forms the federal state of Carinthia (), while the area that was ceded to Italy as a part of the claimed "Julian March" belongs to the autonomous region of Friuli–Venezia Giulia. Most of the area awarded to Yugoslavia (cf. Slovenian Carinthia) now forms part of the larger Carinthia Statistical Region in Slovenia. Area and population Area: Total: Population (1910 Census): Total: 396,228 Linguistic composition According to the last Austrian Imperial census of 1910, the Duchy of Carinthia was composed of the following linguistic communities: Total: 396,228 German: 304,315 (76.80%) Slovene: 82,212 (20.75%) Italian: 82 (0.02%) Other languages or foreigners: 9,619 (2.43%) The Austrian censuses did not count ethnic groups, nor the mother tongue, but the "language of daily interaction" (). Religious composition Total: 396,228 Roman Catholics: 371,361 (93.72%) Protestants: 24,299 (6.13%) Jewish: 341 (0.09%) Other religions or unknown: 227 (0.06%) Dukes of Carinthia Various dynasties Luitpoldings Berthold I (927–938) Henry I (976–978) Salian dynasty Otto I (978–985) Luitpoldings Henry I (985–989), again, Duke of Bavaria 983–985 Ottonian dynasty Henry II, Duke of Bavaria (989–995), also Duke of Bavaria 985–995 Henry II, Holy Roman Emperor (995–1002), also Duke of Bavaria 995–1005 Salian dynasty Otto I (1002–1004), again Conrad I (1004–1011) House of Eppenstein Adalbero/Albert I (1011–1035) Salian dynasty Conrad II (1036–1039) Henry III, Holy Roman Emperor (1039–1047), also Duke of Bavaria 1026–1041 and Holy Roman Emperor 1046–1056 Elder House of Welf Welf (1047–1055) Ezzonids Conrad III (1056–1061) House of Zähringen Berthold II (1061–1077) House of Eppenstein Luitpold (1077–1090) Henry III (1090–1122) House of Sponheim Henry IV (1122–1123) Engelbert (1123–1134) Ulrich I (1134–1144) Henry V (1144–1161) Herman (1161–1181) Ulrich II (1181–1201) Bernhard (regent from 1199, duke 1202–1256) Ulrich III (1256–1269) Various dynasties Přemyslid dynasty Otakar/Otto II (1269–1276), also King of Bohemia 1253–1278 House of Habsburg Rudolph I (1276–1286), also King of Germany 1273–1291 Gorizia-Tyrol Meinhard (1286–1295) Henry VI (1295–1335), also King of Bohemia 1306/1307–1310, jointly with his brothers Louis (1295–1305) Otto III (1295–1310) House of Habsburg Otto IV (1335–1339), jointly with his brother Albert II (1335–1358) Frederick Ι (1358–1362), jointly with