Of the Spoelstra family it concerns the tree line that roots in Smallingerland (Drachten). The tree line of the Dirksen family roots in the south-east corner of Friesland - Ferwoude and Kubaard.
The index list contains 329 names of relatives. On this site you may see the trees in a text presentation as well as in a graphical presentation.
The graphical presentation requires your browser to support Java applications. To achieve that, you may download the software by the link on the menu bar above (Javasoftware). To run the Java applet you schould customize the Java-securitysetting to the lowest level or add this site (URL) to the exceptionlist. The securitysetting is part of the Javaconfigurationscreen (see the installed Javasoftware).
All data are also found on the network of Geneweb (GeneaNet). There family members may interactively put together their own summeries (listings, trees, etc.). If you wish to use the data for further research or to use them in your own application, then you may download here the GEDCOM-file. A GEDCOM-file that contains specific information is available only for family members.
On the menu bar above you can choose the various options.