Victor Podesta, brother of John and Emmeline Podesta, was the author of the short story The Devil Within. He witnessed Jack Harkness getting murdered ruthlessly and then reviving, and chose to write a story on the matter.
The Podestas ran a grocery store about ten miles east of the butcher shop, and they had connections to organised crime. The Podesta family disappeared entirely in 1938. (TV: The Gathering)