Ernest Casimir I was a Count of Nassau-Dietz and Stadtholder of Friesland, Groningen and Drenthe. Wikipedia
Born: December 22, 1573, Dillenburg, Germany
Died: June 2, 1632 (age 58 years), Roermond, Netherlands
Great grandchildren: John William Friso, Albertina Joanetta von Sachsen-Eisenach, Princess Louise Leopoldina of Nassau-Dietz, and more
Grandparents: William I, Count of Nassau-Siegen, Juliana of Stolberg, George III, Landgrave of Leuchtenberg, and more