Marianna

Marianna was a Time Lady who once owned the Doctor's TARDIS.

She was imprisoned inside it after attempting to find the Point of Stillness. She was able to do Block Transfer Computation in her head. She spent her time painting. She claimed to have created Flutterwings. (AUDIO: The Abandoned)

Behind the scenes

 * PROSE: The Gallifrey Chronicles previously established that Marnal was the previous owner of the Doctor's TARDIS.