Wikipedia
Khevenhüller
Khevenhüller is the name of a Carinthian noble family, documented there since 1356, with its ancestral seat at Landskron Castle. In the 16th century, the family split into the two branches of Khevenhüller-Frankenburg, Imperial Counts (i.e. immediate counts of the Holy Roman Empire) from 1593, and Khevenhüller-Hochosterwitz, raised to Imperial Counts in 1725 and, as Khevenhüller-Metsch, to princely rank ( Fürsten) in1763.
In the present-day Austrian state of Carinthia, the princely family of Khevenhüller-Metsch owns the Renaissance castle of Hochosterwitz, a significant edifice and major tourist attraction.