Question: Where was the place of death of Countess Anna Of Nassau's husband?
Answer: Leeuwarden

William Louis of Nassau-Dillenburg (13 March 1560, Dillenburg, Hesse – 13 July 1620, Leeuwarden, Netherlands) was Count of Nassau-Dillenburg from 1606 to 1620, and stadtholder of Friesland, Groningen, and Drenthe. Countess Anna of Nassau (5 November 1563 – 13 June 1588) was a daughter of William the Silent and his second wife, Anna of Saxony. She was the wife of William Louis, Count of Nassau-Dillenburg