Count John I of Nassau-Siegen, German: Johann I. Graf von Nassau-Siegen, was since 1362 Count of Nassau-Siegen. He descended from the Ottonian Line of the House of Nassau.
Siegen Castle, 2011.
Emperor Charles IV. Detail from the Votive Panel of Jan Očko of Vlašim, before 1371. Convent of Saint Agnes, Prague.
Gerlach of Nassau, Archbishop of Mainz. Anonymous engraving of a statue made by Schonhofer in 1361, 17th century. Rijksmuseum, Amsterdam.
Hermannstein Castle. Photo: Manuel Funk, 2011.
Otto I, Count of Nassau
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Otto I of Nassau was Count of Nassau and is the ancestor of the Ottonian branch of the House of Nassau.
Altenberg Abbey