Bernhard had actually been
regent over the Carinthian duchy since his elder brother Duke Ulrich II had fallen seriously ill, possibly with
leprosy, after he had joined the
Crusade of 1197. In the conflict between the rivaling House of Hohenstaufen and the
Welfs around the German throne upon the death of Emperor
Henry VI, he originally continued his brother's support for their Hohenstaufen relative
Philip of Swabia but turned to the Welf
Otto IV after Philipp's assassination in 1208 and attended his
coronation in Rome. Bernhard again switched sides to Philip's nephew
Frederick II, who had been elected
King of the Romans in 1212 and finally prevailed. Bernhard remained a loyal supporter of the Hohenstaufen dynasty. He backed the efforts by Grand Master
Hermann von Salza to reach a reconciliation between Emperor Frederick II and
Pope Gregory IX and sealed a 1230 peace agreement in the church of
San Germano. He later also intermediated in the conflict between the emperor and his rebellious son King
Henry VII; in 1237, he supported the election of Henry's younger brother King
Conrad IV. However, in his later years, having established marital relationships with the Bohemian
Přemyslid dynasty and the
Counts of Andechs, he turned away from straitened Frederick II towards the ultramontane party. In 1247 he achieved the election of his younger son
Philip as
Archbishop of Salzburg. A territorial prince (
princeps terre) at his own judgement, Bernhard concentrated on regional politics and aimed at extending his estates against rivalling territorial princes like Patriarch
Berthold of Aquileia or the
Bishops of Bamberg controlling the city of
Villach and important trade routes to
Italy, albeit without much success. Moreover, the Salzburg archbishops were able to strengthen their position by establishing the
suffragan dioceses of
Seckau and
Lavant in 1218 and 1225 respectively, while the duke picked a long-time quarrel with Count
Meinhard III of Gorizia around the small
Greifenburg estates. In turn, Bernhard entrenched a ducal centre of force comprising the city triangle of
Sankt Veit, where he established a
mint in 1205,
Völkermarkt, and
Klagenfurt, the later Carinthian capital that he had transferred to its present location in 1246. Bernhard's court in Sankt Veit was the site of festive chivalrous
tournaments and a venue of minnesingers like
Walther von der Vogelweide. In his
Frauendienst poem,
Ulrich von Liechtenstein renders his arrival in Carinthia in the guise of a
Venus in 1227, when Duke Bernhard received him with the
Slovene salutation
Buge waz primi, gralva Venus ("God be with you, royal Venus"). Bernhard's hopes to extend his influence after the extinction of the
Austrian Babenberg dynasty in 1246 were disappointed. Nevertheless, he gained control over the strategically important
Loibl Pass and
Seeberg Saddle, leading through the
Karawanks mountain range to the adjacent
March of Carniola in the south, where his son
Ulrich III in 1248 became landgrave (
dominus Carniolae) upon his marriage with
Agnes of Andechs, daughter of Duke
Otto I of Merania. He is also credited as founding the
Kostanjevica (
Landstraß)
Cistercian Abbey in
Lower Carniola about 1234. Bernhard is buried at
St. Paul's Abbey in the Lavanttal. ==Marriage and children==