DeHaan or deHaan is a Dutch family name meaning "The Rooster" ("haan" is the cognate of English "hen", but in Dutch refers to the male of this species)
German mythology. In 1898 he married Hanna deHaan (1878-1946), daughter of the Dutch conductor WillemdeHaan [de] at the Grand Ducal court theatre at Darmstadt
Weingartner, Gabriel Pierné, WillemdeHaan and Georg Henschel. Under the direction of Johan Wagenaar, she accompanied his cantata "De Shipbreuk". Through Schoonderbeek
Barefoot Doctors Willem - Meaning and origin of the name Willem, babynames.co.uk Rienk deHaan, Fryske Foarnammen, Leeuwarden, 2002 (Friese Pers Boekerij)