Jan Frederik Schaap was a Scoutmaster in The Hague and a frontman in the first decades of Scouting in The Netherlands.

In The Hague, he led the '2nd The Hague Troup' (Dutch: 2e 's-Gravenhaagsche troep) together with Philip Baron van Pallandt (who later inherited his uncle's estates Het Laar en Eerde in Ommen).

The estate Het Laar contained the site for Gilwell Ada's Hoeve.

As the editor of the monthly magazine De Padvinder (1914 onward), he wrote the campsong of the 5th World Scout Jamboree in Vogelenzang.

(lyrics: Dutch: In 19-3-7 zul je wat beleven, dan komt de jamboree naar Nederland).