Portal:Belgium/Anniversaries/December/December 30
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Jan_Baptist_van_Helmont.jpg/120px-Jan_Baptist_van_Helmont.jpg)
- 1644: death of Jan Baptist van Helmont, chemist
- 1883: birth of Marie Gevers, novelist
- 1922: birth of Marc Sleen, comics author of Nero
- 1980: birth of Didier Ilunga Mbenga, NBA basketball player with the Dallas Mavericks