Constanze

Constanze (コンスタンツェ, Konsutantse) is the first wife of Aub Frenbeltag and the older sister of Sylvester.

Constanze's face was in large parts inherited from her father's side, making her resemble Sylvester far more than her mother or sister. She did however inherit the blond hair and blue eyes from the Ahrensbach side of the family.

While the exact details are not know, Constanze did play a major part in mediating Sylvester's romance with Frenbeltag.

Rozemyne meets Constanze the first time during the Interduchy Tournament in her third semester at the academy. As the first wife of Aub Frenbeltag, Constanze suggests that their two duchies should cooperate in a joint research project the next year, to look into how much their respective harvests improved on account of their archduke candidates participating in Religious Ceremonies and supplying mana to their central districts. Since Rozemyne expects not being able to stay at the academy the entire year again starting from the next term, she suggests having Wilfried and Charlotte lead this project, with her providing assistance from the sidelines.