"Hans von Zwiedineck-Südenhorst (14 April 1845 – 22 November 1906) was a German historian.
He was born at Frankfurt-am-Main and studied at the University of Graz, where ...
he became a professor in 1885. He died in Graz.
Südenhorst's principal writings are:
Dorfleben im 18. Jahrhundert [Village Life in the eighteenth century] (Vienna, 1877);
Hans Ulrich, Fürst van Eggenberg [Hans Ulrich, Prince of Eggenberg](Vienna, 1880);
Die Politik der Republic Venedig während des dreissigjährigen Krieges [The policy of the Venetian Republic during the Thirty Years' War](Stuttgart, 1882–85);
Venedig als Weltmacht und Weltstadt (Bielefeld, 1899 and 1906);" - (en.wikipedia.org 11.08.2021)