Officially, Tyrn sur Paendrag Mashera was proclaimed dead along with his mother in FY 994, a few days before the death of the High King, although the news did not reach Hawkwing before his death. The circumstances of their deaths are murky, and with the chaos of the War of the Hundred Years just getting underway no one conducted a thorough investigation.
In FY 1004 the ruling council of Mayene, the southeasternmost city of the former Empire and claimed by the nascent nation of Tear, acknowledged a young man as Tyrn. It was claimed that he had escaped the fate that befell his mother and was hidden so he may be brought up in safety without fear of further assassination attempts. The high council of Mayene acknowledged his authority and prestige as a grandson of the High King and named him the First Lord of Mayene, a ceremonial and advisory position. Curiously, he made no claim for the Empire as a whole, but instead merely claimed independence for Mayene.
The man claiming to be Tyrn sur Paendrag Mashera died in FY 1054 from a fever and his daughter Miselle became the First Lady of Mayene, beginning an unbroken line of succession that lasted a thousand years until the time of the current incumbent, Berelain sur Paendrag Paeron.