Hourglass Chart
Leendert van der Knoop
Klaas van der Knoop ‎(I31282)‎
Birth 15 February 1833 -- Vlaardingen
Death 11 July 1914 ‏(Age 81)‏ -- Brielle
Martina Schilperoord ‎(I31283)‎
Birth 5 November 1835 -- Vlaardingen
Death 11 March 1872 ‏(Age 36)‏ -- Vlaardingen