Unnamed Pirate

The Unnamed Pirate is one of the Ten Pirates of Hawkins, and had one piece of the Treasure Map of Hawkins, which is needed in Ultima VI.

He died in a shipwreck at the Cape of Heroes at 71°S 15°E, where, much later, the Avatar found his piece of the map, guarded by the undead remains of the crew.

The Ultima 6 Project
In the Ultima 6 Project, the site of the wreck was still the same, but the ship now was identified as the HMS Empire and the undead crew was even more deadly. However, the ship also hid many riches and good equipment in return for these dangers.

Trivia

 * The location is quite different in the C64 version. It's there at 1A8, 3A8.