Jacob is Honora and Stefan 's youngest son (suspected by Vanessa , Stefan's late wife). He is Sophie and Agatha 's half-brother and also the younger brother of Adam, Honora's eldest son.


Jacob appeared to be six years old in the second book of The School for Good And Evil, younger than his brother Adam for two years. In the last book of The School for Good And Evil, he appeared to be not more than seven or eight years old.


Like Adam, Jacob was also loved tremendously by Stefan, who was suspected by his late wife Vanessa to be the two boy's biological father. On the other half, Sophie hated Jacob as she hated Adam because of her hatred towards their mother, Honora, whom she thought had ruined her parents' marriage.