High Quality Content by WIKIPEDIA articles! Hendrik Pieter Nicolaas Muller, GON, RNL, FRGS (2 April 1859 in Rotterdam - 11 August 1941 in The Hague, Netherlands) was a Dutch businessman, diplomat, world traveller, publicist, and philanthropist. He was a son of Hendrik Muller Sz., a Rotterdam-based Dutch businessman and politician, and Marie Cornelie van Rijckevorsel, member of another prominent Rotterdam based business family.