Both before and during Sophie's time with Leverage Consulting & Associates, Sophie has used the name Katherine Clive in a variety of her cons. It is probably the one she identifies with the most, aside from her Sophie Devereaux alias.
- "The Fairy Godparents Job" - Sophie uses the name "Katherine" with her boyfriend, Jack.
- "The Two Live Crew Job - When Sophie is presumed dead, the Leverage gang fakes a funeral for Katherine Clive. Sophie later changes the name on the grave to "Sophie Devereaux".