Georgius Heitz is my ggggrandfather. What do you gues about children?:-)
As far as I know Georgius Heitz ans Jansje Blokzijl had two children: - Jansje (daughter), born in 1819 in Amsterdam (The Netherlands) - Dirk Johannes (son), born in 1832 in Amsterdam (The Netherlands).
Because I am only working on an ancester-chart (do you call it like that? A chart with my parents, grandparents and so on?) I didn't look for more children. As I look at the time-line I think these two are not all the children.