Arkhan the First
Harry Maybourne's royal title on his new planet, where he was permitted to resettle after his retirement. Not only was Arkhan a prophesier (saving countless lives), but he was responsible for the people's legal code, the designs for a water mill and irrigation system, and the discovery of important medicines.
See also: Harold Maybourne
It's Good To Be King - King Arkhan the First greets old friends from Earth, but is not surprised when he realizes that the travelers from the stars who will save his world happens to be SG-1.