4 Nov 1888 - Geburt of seine Mutter Hendrika

2 Nov 1892 - Geburt of sein Vater Frederik at 's-Gravenhage, S-Gravenhage, Zuid-Holland, Netherlands 

14 Jul 1915 - Eheschließung of eltern at The Hague Netherlands Temple, 's-Gravenhage, S-Gravenhage, Zuid-Holland, Netherlands 

7 Jul 1971 - Tod of sein Vater Frederik at 's-Gravenhage, S-Gravenhage, Zuid-Holland, Netherlands 

1977 - Tod of seine Mutter Hendrika