Constant Anton Nieuwenhuys, better known as Constant, was a Dutch painter, sculptor, graphic artist, author and musician.

Saint Ignatius Gymnasium is one of the five categorial gymnasia in Amsterdam, Netherlands. Together with the Vossius Gymnasium, the Barlaeus Gymnasium and Cygnus Gymnasium it is among the most prestigious schools in Amsterdam. Ignatius is located in the Jan van Eijckstraat in the affluent 'Old South' district of Amsterdam.