Ronald Henry Loudon Dutch diplomat (b. 1942) Parents James Willem Loudon Margarethe Katharine Osieck Children Vanessa Loudon Siblings James Alexander Loudon Lydia Frederika Loudon James Theodore Loudon Eugenie Mary Loudon Erik Hugo Loudon Margaretha Eugénie Adrienne Loudon Partners Catherina Maria Barones Bentinck van Schoonheten