Sir Cabirus, from Ultima Underworld
Sir Cabirus had the idea of founding a fortress of the Eight Virtues in the place that was most opposed to it: the Stygian Abyss on the Isle of the Avatar. After getting the permission from Lord British and enough volunteers, he started the project. For years everything went well, but then it became obvious that only his personal leadership and prestige had held the colony together.
When Cabirus died in his sleep (some say he was poisoned, but Corby clearly says that it was a natural death, however untimely), the colonists broke into opposing factions fast. The eight talismans, collected by Sir Cabrius, were looted, since he had no written plans on who to give them to. In the end, the colony became a prison.
The Ultima 6 Project
In The Ultima 6 Project, Cabirus instantly recognized the Avatar from Woodroffe's picture in Castle Britannia, which he studied frequently while visiting his friend Almric. Cabirus told the hero he had been doing considerable research into the Virtues of Britannia, and greatly admired the hero's quest. He felt it foolish that each city in Britannia should stand for a separate virtue, when instead a community should be founded which would represent all of the Britannian Virtues.
Cabirus asked the hero's help assembling a party of virtuous individuals who might assist with his vision. He hoped to recruit Lord Zellivan's newly formed Knights of the Crux Ansata and Aganar of Moonglow's Seers of the Moonstone. He felt that the recent threat of the Gargoyles proved the necessity of strong protection for any newly formed colony.