Emma was born as Adelheid Emma Wilhelmina Theresia , Princess of Waldeck and Pyrmont on 2 August 1858 in Arolsen Castle in Arolsen , the capital of the small German principality of Waldeck and Pyrmont .
Adelheid Emma Wilhelmina Theresia ( Arolsen , 2 August 1858 - Den Haag , 20 March 1934 ) , Princess of Orange-Nassau , Princess of Waldeck-Pyrmont , was the second wife of king William III of the Netherlands .