Zezanne

Zezanne was the daughter of Miranda Dawkins, and therefore technical granddaughter of the Eighth Doctor. After escaping the destruction of the Council of Eight's Time Station in the Jonah with Soul, they suffered complete amnesia. Landing in a London junkyard in 1963, the Jonah changed appearance to that of a Metropolitan police box. Soul believed he was called the Doctor, and Zezanne decided she was his granddaughter. (PROSE: Sometime Never...)

Behind the scenes
Zezanne is an obvious reference to, or even a possible origin for, Susan, who's name was originally "Suzanne" when envisioned as an alien princess.