Tannivh Irithyl was fifth Coronal of Cormanthyr, ruling from -791 DR to -223 DR. He is known for having successfully routed the drow form the Twisted Tower in -331 DR, passing control of the tower to followers of Eilistraee. In gratitude to the reformed and surface-acclimatized drow who helped in the downfall of the tower, he granted them rights to settle remote woods east of Cormanthor. He died in -223 DR, passing the rulership of the realm to his son, Eltargrim Irithyl.