Julius Alexander, son of Samuel Alexander and Johanna Josef, was married to Erna Herz. The couple lived in the Kerkstraat 31 in Vaals. The widower Markus Herz lived together with the family.
Ministerie van Justitie, Commissie tot het doen van aangiften van overlijden van vermisten 1949-1962 (1978) Nationaal Archief, toegangsnr. 2.09.34.02