Mag spent the entire morning integrating with the chefs of the main kitchen, and got some information from them.
The majority of the information was already in the Gray Temple's intel. However, as the main kitchen had always been supplying the food for the chief and the nobles in the inner city, they knew the secret history of the palace very well. Under Mag's enticement, they told him many stories about the former chief.
Gary and the former chief, Isaiah, were half brothers. Gary could be considered as a bastard, but because he had the same exceptional talents, he was brought into the palace.
Meanwhile, Connie and Ferdinand were most likely half-siblings too. Connie was the queen's child, but as for Ferdinand, there were still arguments about if he was in fact the queen's biological child.