- "Quintillan of the Interior. And that is not a joke."
- ―Aral states his belief that Quintillan could be Regent[src]
Quintillan served as Minister of the Interior for Barrayar starting from some time during Ezar Vorbarra's reign until ten years into the time of Gregor's reign (three years before the events of Mirror Dance). Aral Vorkosigan saw him as a suitable candidate to be the next Prime Minister at that time, but when Quintillan was killed in a flyer accident, Aral stayed on the job instead.