Pieter van Vollenhoven

Pieter van Vollenhoven Jr. (born 30 April 1939) is a Dutch royal, photographer, educator and pianist. He is the husband of Princess Margriet of the Netherlands and a member, by marriage, of the Dutch Royal House. He was born in Schiedam, Netherlands. He was chairman of the Dutch Safety Board from which he retired in February 2011. 
Van Vollenhoven was diagnosed with melanoma twice in May 2017 and in November 2017.