Duchess Ironfang was an ancient Vulpanan who lived during the time of the Coyote Wars. She and her partner, the Golden-Eyed Prince, became acquainted with the Doctor when he visited the planet Vulpana and helped to end the Coyote Wars. The Doctor attended Ironfang and the Golden-Eyed Prince's coronation and considered the pair a lovely couple.
Eventually the people of Vulpana forgot the true history of both Ironfang and the events she took part in, believing them to be myths. This included Mags, a Vulpanan companion of the Seventh Doctor, who only realized Duchess Ironfang actually existed when he claimed to have made a supply run during the Siege of Coyote Rock. Mags sarcastically suggested he also spent time with Duchess Ironfang and the Golden-Eyed Prince, to which the Doctor responded by telling her they were a lovely couple. (AUDIO: The Moons of Vulpana)