|Death||Probably killed by his own nightmare in the Tower of Teeth|
|Marital Status||Presumably single as he is a wizard|
Mr Sideney was a student wizard who needed to earn a lot of money very fast to pay off his debts to Chrysoprase during the events of Hogfather. Foolishly he decided to join Mr Teatime's scheme to inhume the Hogfather. His part in it is to open the magically sealed locks at the top of the tower in the Tower of Teeth. Having done so he flees, and then finds that he has returned to his infant school, is five years old again, and is at the mercy of the school bully.