
Taking the title Earl of Outer Cheydinhal, Turpis married a niece of Admiral Bendu Olo and set about fathering numerous descendants. Members of the House led mercenary companies that fought on both sides in the War of Righteousness in the 2300s, and when the dust settled General Turpis "Volte-Face" Tharn was in possession of the holdings that the family today calls home. Fervidius is the author of the Sermons Denouncing the Seventeen Leniencies.

The first positively identifiable Tharn is Fervidius Tharn of the Alessian Order, who was Arch-Prelate of the Maruhkati Selective from 1E 1188 until his death. Alessia's slave uprising, is a member of the family, but the only known link is his name. The House also holds that Vilius Tharn, "Blade-Serrator and Master of the Abbatoir" to Pelinal Whitestrake during St. Lady Euphemia Glaber posited a theory that this Tharanus was the same notorious Tharhan the Mutilant of the Gradual Massacre in 1E 227, but this was dismissed after Abnur Tharn discovered the "Scroll of Precursor Saints" in the vaults below White-Gold Tower in 2E 541. Tharanus was apparently involved in the Ayleid slave operation at Fanacas. The family traces its lineage back to a Tharanus Ye Redde-Hand, who is mentioned in the Tamrilean Tractates written in 1E 200. By the time of the Interregnum the family had established itself as one of the most important and involved families in the Empire.

Once the family established itself as one of reliability and utmost loyalty, they were used more and more to subjugate and eliminate Imperial dissenters. They have held estates in and around the Nibenay Basin since the early parts of the First Era.

House Tharn is a noble Imperial family from Cheydinhal.
