(AD 788–843) In the 4th century
Chur became the seat of the first Christian bishopric north to the
Alps. Despite a legend assigning its foundation to an alleged Briton king, St. Lucius, the first known bishop is one Asinio in AD 451. In the aftermath of the
Gothic War (535-554), the Byzantine Empire found itself unable to prevent the Germanic tribe of the
Lombards from invading Italy and founding
a kingdom there. The territory left behind by the Lombards in Pannonia was subsequently settled by Slavs (with the help of their
Avar overlords) in the last decades of the 6th century. In 588 they reached the area of the Upper
Sava River and in 591 they arrived in the Upper
Drava region, where they soon fought the Bavarians under Duke
Tassilo I. In 592 the Bavarians won, but three years later in 595 the Slavic-Avar army gained victory and thus consolidated the boundary between the
Frankish and the
Avar territories. By that time, today's East Tyrol and Carinthia came to be referred to in historical sources as
Provincia Sclaborum (the Country of Slavs). In the 6th century Chur was also conquered by the
Franks. Between the 9th and 10th centuries, the
Alpine Slavs, who are reckoned to be among the ancestors of present-day Slovenes, settled the eastern areas of the
Friuli region. They settled in the easternmost mountainous areas of Friuli, known as the
Friulian Slavia, as well as the
Karst Plateau and the area north and south from Gorizia. Slavic settlement in the
Eastern Alps region is assumed to be connected to the collapse of local dioceses in the late 6th century, a change in population and
material culture, and most importantly, in the establishment of a Slavic
language group in the area. The territory settled by Slavs, however, was also inhabited by the remains of the indigenous Romanized population, which preserved Christianity. Slavs in both the Eastern Alps and the Pannonian region are assumed to be originally subject to Avar rulers (
kagans). After Avar rule weakened around 610, a relatively independent March of the Slavs (
marca Vinedorum), governed by a
duke, emerged in southern Carinthia in the early 7th century. Historical sources mention
Valuk as the duke of Slavs (
Wallux dux Winedorum). The year 626 brought an end to Avar dominance over Slavs, as the Avars were defeated at
Constantinople. In 658 Samo died and his Tribal Union disintegrated. A smaller part of the original March of the Slavs, centred north of modern Klagenfurt, preserved independence and came to be known as
Carantania. The name
Carantania itself begins to appear in historical sources soon after 660. The first clear indication of a specific
ethnic identity and
political organisation may be recognised in the geographical term
Carantanum which
Paul the Deacon used in reference to the year 664, and in connection to which he also mentioned a specific Slavic people (
gens Sclavorum) living there. When about 740 Prince
Boruth asked the Bavarian duke
Odilo for help against the pressing danger posed by
Avar tribes from the east, Carantania lost its independence. Boruth's successors had to accept the overlordship of
Bavaria and the semifeudal
Frankish kingdom, ruled by
Charlemagne from 771 to 814. Charlemagne also put an end to the invasions undertaken by the Avars, who had regained eastern parts of Carantania between 745 and 795. In 828, Carantania finally became a
margraviate of the
Carolingian Empire. The local princes were deposed for following the
anti-Frankish rebellion of
Ljudevit Posavski, the prince of
Slavs of Lower Pannonia, and replaced by a
Germanic (primarily Bavarian) ascendancy. By the 843
Treaty of Verdun, it passed into the hands of
Louis the German (804–876) who, according to the
Annales Fuldenses (863), gave the title of a "prefect of the Carantanians" (
praelatus Carantanis) to his eldest son
Carloman. In 887
Arnulf of Carinthia (850–899), a grandson of Louis the German, assumed his title of King of the
East Franks and became the first Duke of Carinthia. The city of Chur suffered several invasions by the
Magyars in 925-926, when the cathedral was destroyed. In the area of Carantania 954–979 exist Slavic parish
"pagus Crouuati"(
Croats) which is mentioned in royal charters, ruled by count Hartwig in the name of the German king. ==The Ducal Inauguration==