Heinrich Li'Yeiraun

 was a Count, and the head of the County of Li'Yeiraun, formed by a combination of his inherited Barony of Yeiraun and his wife Cynid's Barony of Liaern. He had a daughter, Adriana Li'Yeiraun, who was widely believed the result of Red Jack's affair with Cynid, explaining 's enmity for Red Jack.

His name was spelled several times as Henrich Li'Yeiraun.

Partly because of joint enmity of Red Jack his undead allies, became an ally of Marquis Byron Avengene; and part of the Avengene - Li'Yeiraun - Hartmoor alliance. By winter 724-725, he was sending his green troops to fight with Avengene against the orcs to season them. In the meantime, the Church of the Vindicator was spreading in his county, especially in the south.