The First Dungeon Master was the descendant of a servant from the court of Lord Dimwit Flathead who was present on the day that Megaboz cursed the kingdom. The FDM inherited the parchment from him as a family heirloom. On 14 Mumberbur 883 GUE, that man, was the last left behind in Flatheadia when everybody else abandoned the castle, fearing the the Curse would be fulfilled after 94 years. Apparently the first Dungeon Master grew old and weary of his powers, and had chosen this young adventurer as his successor.