William I of Nassau-Siegen, nicknamed the Elder or the Rich, was Count of Nassau-Siegen and half of Diez from 1516 to 1559. He was a descendant of the Ottonian Line of the House of Nassau.
Portrait by Dutch artist Johannes Tideman (1671)
Siegen Castle, 2011.
Emperor Charles V. Portrait by Titian, 1533. Museo Nacional del Prado, Madrid.
Diez Castle. Photo: Peter Klassen, 2006.
Within the Holy Roman Empire, the War of the Katzenelnbogen Succession or the Katzenelnbogen Succession Struggle was a war of succession about the County of Katzenelnbogen after the death of William I
Katzenelnbogen in 1655
Tomb of William II "the Middle", Landgrave of Lower Hesse