The Guardians of Gillyfrond

The  Holodisk can be found in the house of Billy Creel inside Megaton. This story can also be accessed on Squire Maxon's Terminal in his room within the B circle of the Citadel.

Any specific purposes or references of this story are currently unknown or undocumented here. It can be possible that Billy Creel uses this as a bedtime story for Maggie, since the story on the holodisk seems to be a vocalized book for children.