Sudenhorst's principal writings are Dorfleben im 18 Jahrhundert (Vienna, 1877); Hans Ulrich, Fiirst von Eggenberg (Vienna, 1880); Die Politik der Republic Venedig wdhrend des dreissigjdhrigen Krieges (Stuttgart, 1882-85); Venedig als Weltmacht and Weltstadt (Bielefeld, 1899 and 1906); Kriegsbilder aus der Zeit der Landsknechte (Stuttgart, 1883); Die bfentliche Meinung in Deutschland im Zeitalter Ludwigs XIV.
Presented the lordship to his minister, Hans Ulrich von Eggenberg, and in 1625 raised it to the rank of an hereditary duchy in his favour.
From the Eggenberg family Krumau passed in 171 9 to Prince Adam Franz Karl of Schwarzenberg, who was created duke of Krumau in 1723.
Other important places are Leoben (10,204), Bruck on the Mur (7527), Mariazell (1263), Mi rzzuschlag (4856), Eisenerz (6494), Vordernberg (3111), Judenburg (4901), Trifail (10,851), Eggenberg (9570), Donawitz (13,093), KOflach (3345) and Voitsberg (3321).
On the left bank of the Mur is the pilgrimage church of Maria Trost, built in 1714; on the right bank is the castle of Eggenberg, built in the 17th century.
As early as 1530 the Lutheran doctrine was preached in Graz by Seifried and Jacob von Eggenberg, and in 1540 Eggenberg founded the Paradies or Lutheran school, in which Kepler afterwards taught.
In 1647 Gradisca and its territory, including Aquileia and forty-three smaller places, were erected into a separate countship in favour of Johann Anton von Eggenberg, duke of Krumau.