Lord Greystock was one of Daerunt's original Royal Knights, recruited by Mathos Crisar when Daerunt rebuilt the order after taking the throne. Aron served the crown up until recently when a plague spread throughout Castello, wiping out the entire Castello line as well as the majority of their subjects. Castello was originally offered to Dyard Graniteworth, but when the old knight refused Aron was given the lands and titles that go along with Castello. Daerunt also gave Aron 5,000 men to garrison his castle and live on his lands. Many believe Castello to now be haunted by, but lord Aron does not believe in ghost and fairy tales.