Edward William von Fernard.
First child of Fernard family
Have five type of magic (prodigy)
Care about his younger sister even he never saw her and care about Samuel as he also live in the same house
Samuel Dean von Fernard.
Fourth child of Fernard Family
Have four type of magic (genius)
Very close to Maria and his elder brother
Alfred Harry von Fernard
Second child of fernard family
Have four type of magic
More closer to Alfred and Samuel than Catherine
Catherine Rose von Fernard ( the heroine)
Have seven type of magic (legendary)
Fifth and the youngest daughter of Fernard Family
Close to her elder brother, Alfred
Camellia von Fernard
Second wife of Grand Duke Zachary
Only good to her children and husband but hate the children of first wife
all of the picture above is copy from the google. i just borrowed the picture.