@Joost Strydom SV/PROG
Seven more sponsored (free) FamilyTreeDNA y37DNA tests are available to key confirmed descendants of his five known grandsons who had children:
Sponsored upgrades may be available to those already tested with FTDNA or another company:
For more information visit the Strydom Surname Project:
http://www.familytreedna.com/public/Strydom/