David

David and his family are the lighthousekeepers of Greyhaven, located south of Trinsic, in Ultima V.

After getting a hint from the bard Scally in Buccaneer's Den, the Avatar visited Greyhaven to ask David about his invention, the sextant. David was willing to give it the Avatar, after getting some praise for the invention, feeling that the hero had more use for it.

David otherwise proved quiet, and was somewhat annoyed with his wife Charlotte's positive outlook on the regime imposed by Blackthorn.

The Ultima 6 Project
In The Ultima 6 Project, it is revealed that David left his wife Charlotte when she became increasingly fanatical about the Oppression, and took his son Aleyn along to protect him.

Trivia

 * The sextant was already available in Ultima IV.