Ysabell

Ysabell was the adopted daughter of Death, who saved her as a baby when her parents were killed in the Great Nef desert No one know why Death saved her, Ysabell said that "He can't feel pity, but he may have thought it".

When Mort, her future husband, first encountered her she was a sixteen-year-old girl with silver hair and silver eyes who, it transpired, had been sixteen for thirty-five Discworld 'years' because she'd being living in Death's Domain where time cannot exist. Mort's first thoughts of Ysabell were "too many chocolates", and her fixation for the colour pink.Ysabell once met Rincewind, and was surprised to learn that he was not actually dead. This situation might not have lasted very long if the Luggage had not intervened.

Ysabell was competent in carrying out the work of her father including 'The Duty' and 'doing the nodes'. Before Mort arrived she shared her home with Albert, Death's manservant.

Ysabell later married Mort, and together they became the Duke and Duchess of Sto Helit, and parents of Susan. She was killed, along with her husband, in a coach crash. Both her and Mort turned down an offer from Death to extend the duration of their existence on the grounds that it wouldn't be the same as actually lengthening their lives.