
1) Composition in G major 2) Dutch anthem 3) Dutch boy name
Found on
https://www.crosswordclues.com/clue/wilhelmus

Wilhelmus van Nassouwe, usually known just as the Wilhelmus (Dutch: het Wilhelmus Nl-Het Wilhelmus2.ogg; English translation: the William), is the national anthem of the Netherlands and is the oldest national anthem in the world though the words of the Japanese national anthem (not the music) date back to the ninth century. Although it was not rec...
Found on
http://en.wikipedia.org/wiki/Wilhelmus
No exact match found.