John VII, Count of Nassau-Siegen
John VII, Count of Nassau-Siegen was born on June 7, 1561. See ranking, bio blurb, and everyone else born that day.
About John VII, Count of Nassau-Siegen
Count John VII the Middle of Nassau-Siegen (7 June 1561 – 27 September 1623), German: Johann VII. der Mittlere Graf von Nassau-Siegen, official titles: Graf zu Nassau, Katzenelnbogen, Vianden und Diez, Herr zu Beilstein, was since 1606 Count of Nassau-Siegen, a part of the County of Nassau, and the progenitor of the House of Nassau-Siegen, a cadet branch of the Ottonian Line of the House of Nassau. John was one of the most important military theorists of his time, who introduced many innovations and inventions. His Kriegsbuch contained all the military knowledge of his time, but also many new…