• 727 DR [Year of the Purloined Throne]
  • Rise of Keryvyr
    Unnoticed during the Tenth Seros War, sea elves clear and resettle a portion of the cliffs above the Haunted Plains (the Bay of Yhaunn off Sembia). Within twenty-five years, this grows into a string of cities and outposts spanning the western cliffs. »

  • The sea elves of Seros establish Keryvyr in a section of the cliff overlooking the Haunted Plains (present-day Bay of Yhaunn off Sembia). »

  • 750 DR [Year of the Dying Dwarf]
  • End of the Tenth Seros War
    This war destorys the last warring remnants of Hmurrath, though other casualties include an ixitxachitl baron's plan to take over the plateau. Eadraal, having absorbed all of fallen Hmurrath's territory, is now the largest nation to survive into the Forth Epoch, followed by Keryvyr and its sea elf allies to the west and north. »

  • 771 DR [Year of the Stalking Knight]
  • The depths of the Dragonmere off Cormyr become the home to the sea elf kingdom of Naramyr, a former barony of Aryselmalyr. Sea elves resettle here after being refused to form colonies on the Hmur Plateau by Eadraal. Their best protection is the Haunted Plains, which keeps all but koalinth and other monsters from their borders. Alliacnes with Keryvyr also help. »

  • 942 DR [Year of the Circling Vulture]
  • End of the Eleventh Seros War
    This war destroys the central sea elf kingdom of Keryvyr, though the wizard and would-be coronal Nyratiis escape capture. Keryvyr's allies survive. Of the subordinate kingdoms and duchies of Aryselmalyr's golden era, only Naramyr and Selu Maraar survive. »