Cornelius Cornelius; コルネリウス
Age
Gender Male
Blood Type
Birthday
Family structure
Spoiler　Father: Karstedt 　 Mother: Elvira (father's first wife) 　 Older brother: Eckhart 　 Older brother: Lamprecht 　 Younger sister: Rozemyne 　 Younger half-brother: Nikolaus 　 Paternal relatives 　 Great-grandfather: Aub Ehrenfest (fifth generation) 　 Great-grandfather: former Giebe Leisegang (Bonifatius's first wife's father) 　 Grandfather: Bonifatius 　 Uncle: Karstedt's half-brother 　　　 Cousin: Traugott 　 Maternal relatives 　 Grandfather: former Giebe Haldenzel 　 Uncle: Claudio
Status
Spoiler　Class: archnoble 　 Occupation: apprentice knight → knight / Rozemyne's aide
Age related
Spoiler　Grade difference with Rozemyne: +4 　 Age difference from Rozemyne: +4 (summer) 　 Birth season: spring

He is Rozemyne's apprentice knight at service. He has bright green like young leaves hair and black eyes.