|Place of origin:||Earth|
|First seen in:||Everything Changes|
|Other appearances:||PROSE: We All Go Through|
|Main actor:||Olwen Medi|
- You may wish to consult
Yvonnefor other, similarly-named pages.
Yvonne was a colleague of Gwen Cooper's at the Cardiff police department. In 2007, Gwen asked her to search for a Captain Jack Harkness on the police database. She told Gwen the only person with that name and title was an American who went missing in 1941. (TV: Everything Changes)