House Hargraves was a House Major on Jackson's Whole specializing in hostage negotiation. They were co-owners of the Hargraves-Dyne Consortium station, where Barrayar had a consulate.
- "House Hargraves, the galactic fence, prim-faced middlemen for ransom deals—you had to give them credit, hostages exchanged through their good offices came back alive, mostly."
- ―Miles meditates on Jacksonian Houses
Their negotiators unwittingly helped the Dendarii Mercenaries locate the Barrayaran courier, Lieutenant Vorbohn.