|Death||Probably killed by his own nightmare in the Tower of Teeth|
|Marital Status||Presumably single as he is a wizard|
Mr Sideney is a student wizard who needs to earn a lot of money very fast to pay off his debts to Chrysoprase during the events of Hogfather. Foolishly he decides to join Mr Teatime's scheme to inhume the Hogfather. His part in the plan is to cast the spell on the teeth which affects their original owners; Teatime later employs him to open the magically sealed locks at the top of the Tower of Teeth. Having done so he flees, but finds himself five years old again and back in his schoolyard at the mercy of his school bully - his greatest childhood fear.