Question: Where did Prince Frederick Of Prussia (1911–1966)'s mother die?
Sentence (from "Prince Frederick of the Netherlands"): Prince Frederick of the Netherlands, Prince of Orange- Nassau( full names: Willem Frederik Karel; 28 February 1797 in Berlin – 8 September 1881 in Wassenaar), was the second son of William I of the Netherlands and his wife, Wilhelmine of Prussia.
Relevant evidence: No