This website is based on some 30 years of research by a father and son: Pieter C. Sigmond and Kees Sigmond. A page was devoted to every known ancestors of Kees Sigmond up to the 8th generation: each show the descent of that ancestor's family for as far back as we were able to establish. The family-names which have been included can be found in the index on the homepage. It is possible to "jump" from one family to the next: wives and husbands are linked to their own family-pages. The roman numbers are the generations, counted from generation I (Kees Sigmond).
Kees Sigmond has a number of genelogical and historical publications to his name.