Johannes Bernhardus Theodorus "Hans" Hugenholtz, in English-speaking countries a.k.a. John Hugenholtz (October 31 1914, Vledder - March 25 1995, Bentveld) was a Dutch designer of race tracks. Hugenholtz's father, of the same name, was a protestant minister and peace activist who moved his family to Purmerend in 1918 and Ammerstol in 1924. Hugenholtz studied to be a lawyer and became a journalist by profession, but his interests were in cars. Wikipedia
The definitive Wikipedia entry for John Hugenholtz. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/John_Hugenholtz