Do you have information about Willem Gelderman? Please contribute to his biography. Everything on WikiTree is a collaborative work-in-progress.
Thanks to Ludwig Kraayenbrink for starting this profile.
Click the Changes tab for the details of contributions by Ludwig and others.
Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.
Willem is 32 degrees from Alexander Graham Bell, 42 degrees from John Baird, 45 degrees from Claude Chappe, 45 degrees from Lars Magnus Ericsson, 40 degrees from Steve Jobs, 35 degrees from Hedy Lamarr, 32 degrees from Guglielmo Marconi, 29 degrees from Samuel Morse, 33 degrees from Home Popham and 40 degrees from Maxx Martin on our single family tree. Login to find your connection.