Lord Fenron was an alternate identity that the bounty hunter Ryluk Shouja adopted after he stole several hundred million credits from the Confederacy of Independant Systems.
Lord Fenron officially purchased the Shouja Mansion from Ryluk Shouja shortly after the bounty hunter was forced to disappear by the Confederacy of Independant Systems. He claimed to be of the same line as the last King of Corellia, albeit peripherally. He made no claim on the throne, a claim that would most likely have been denied anyway.
Fenron lived as a hermit for the most part, keeping to himself and sending his massive droid staff on all of his errands. He made infrequent trips on his ship, the Pilot's Delight, which sat on the private landing pad the Lymie used to dock to.
Fenron officially sold the Shouja Mansion back to Ryluk after the Clone War before taking an extended leave of absence in a luxury starship, which ended in the destruction of the ship and the killing of the alter ego.