Eldest child and severe disappointment.
Bernado Sertorius does not have the capacity to finish anything. Force to learn magic by his mother he only learned the most basic of spells. Deciding he would make wine Bernado sunk thousands of families dollars into a vineyard only to decide he was interested a few months later. He tried his hand at seafaring and quit after a week. Now he stays at the family villa doing basically nothing all day long.