Heinrich, Karl, Graf von Altberg-Ehrenstein

The Imperial German Navy lieutenant-commander of the U-29, which during W.W.I, torpedoed the British freighter Victory from which they discovered an ivory medallion with the head of a youth crowned with laurel.  Heinrich was a haughty, arrogant aristocrat.  Shot six of the mutineers and went down with the ship into the bizarre underwater ruins of a lost civilization.

[The Temple - H.P.L.]