Unique Lady

 was the name given by Martha Jones to a rich lady from 21st century Earth. She had a large, opulent house and armed butlers to act as guards. The Tenth Doctor and Martha Jones visited her when looking for clues on who was stealing specimens from the Museum of the Last Ones. She was in a permanent quest for uniqueness, and gaining one-of-a kind objects. She illegally bought a coat made of the skin of the last quagga for this reason. She also planned the murder of artist Johann Illes after he planned to paint a portrait of Arabella Horsley, making his portrait of her not unique. (PROSE: The Last Dodo)