1. | Johann Christian Schlack was born 29 Dec 1788, Siedkow, Belgard, Pommern; died 1 Feb 1836. Johann married Wilhelmine Caroline Venzke 4 Apr 1823. Wilhelmine (daughter of Johan Christoph Venzke and Christina Louise Venzke) was born 10 Mar 1793, Siedkow, Belgard, Pommern; died 14 Oct 1850. [Group Sheet] |