Rosewald family

The Roswald family were a family of upper class ghouls who held prominent ascendancy in Germany. In Chapter 14, the back story of Matsuri Washuu credits him with the destruction of the "Roswalds" family however, based on the tendency of Ghouls altering their family names, it is likely that Kanae Rosewald is a surviving member of the clan despite having an additional 'E' added to the name.