John Maurice of Nassau (Dutch: Johan Maurits van Nassau-Siegen; German: Johann Moritz von Nassau-Siegen; Portuguese: João Maurício de Nassau-Siegen; 17 June 1604 – 20 December 1679), called "the Brazilian" for his fruitful period as governor of Dutch Brazil, was Count and (from 1664) Prince of Nassau-Siegen. He served as Herrenmeister (equivalent to Grand Master) of the Order of Saint John (Bailiwick of Brandenburg) from 1652 until his death in 1679. The former residence of John Maurice in The Hague, Netherlands, is now an art museum named Mauritshuis, which means "Maurice House" in Dutch. Source: Wikipedia (en)