In an interview with Talkie Toaster on the official Red Dwarf website, Frank Hollister revealed some details on his earlier years, although he made up some tall tales before admitting the truth. After he was fired from working in a diner in Kentucky, USA, Hollister sold doughnuts on Callisto as "Dennis the Doughnut Boy". From there, Hollister moved onto Phobos, where he got his first posting as a Third Technician aboard a JMC spaceship, the McGovern.
Since Phobos was the last residence of Hollister before joining the JMC, it is possible that his wife Martha lived there too.
- Phobos at wikipedia