
| 1. | Jhr. Prof. Joan Melchior Kemper was born on 26 Apr 1776 in Amsterdam, Noord-Holland, Nederland; died on 20 Jul 1824 in Leiden, Zuid-Holland, Nederland. Joan married Christina de Vries on 18 Mar 1798 in Amsterdam, Noord-Holland, Nederland. Christina (daughter of Gerrit de Vries and Catharina de Bosch) was born on 14 Apr 1772 in Amsterdam, Noord-Holland, Nederland; died on 4 Jul 1856 in Amsterdam, Noord-Holland, Nederland. [Group Sheet] [Family Chart] |