Abraham Bilderdijk was married to a non-jewish wife, as far as we know. She did go with him to the place where they both have died, somewhere in the middle of Europe. Her name was Clementine Fernande Marie Smit Roeters. Exact information has not been found.
Both the names can be traced on the list of jewish victims of Rotterdamm. See yhis website website Loods 24 Rotterdam.
Person is in the National Database of Victims of Persecution