David Graves (Gwendy's Final Task)

She grabs the back of David Graves’s seat and pulls herself in between Kathy and her second in command, whose name has slipped her mind. It’s something about water, but she can’t remember what. There are no portholes in the control area, but there’s a narrow slit window four feet long and six inches wide.

Gwendy’s spacecraft crewmember and Road Virus’s newspaper-quoted neighbor share David Graves’s name without corroborating identity.