De Moss, Van Hoorebeke, Van De Walle, and similar names with “de,” “van,” and “van de,” have spaces between the prefix and the rest of the name.
The problem is that sometimes they don’t have a space between the “van,” “van de,” or “de” and are all run together. When querying any electronic database for these names, make certain to search for DeMoss, De Moss, and maybe even just “Moss,” Different sites handle these names differently and what worked to locate the name on one site may not work on another.
Occasionally Van De gets morphed into “Vander.”