We are Ardi Dortmans and Nardi Steverink and live in Wageningen. In 2008 we started to gather the data for the history of our families Dortmans (Brabant) and Steverink (Achterhoek). We use a variety of sources available on the internet, exchange with other genealogists, visits to archives, family history etc. The focus is on our early history before 1812 which is more difficult to compile.
We publish this data on our own website via https://www.dortmans-steverink.nl/ using the Drupal and Humogen packages.
The chart below gives the distribution of origin of the first 12 generations of our family tree (Brabant-Gelderland, courtesy Geneanet):