King Ascertes Hallow was the husband of Efaritay, Queen of the "Hallowed Land", an ancient civilization located in what is now the swamplands of Morytania, during the late Second Age.

During his time, the Hallowed Land was said to have flourished, its many peaceful settlements existing as far north as the Northern Sea. However, during the God Wars, the vampyre Lord Drakan attacked the Hallowed Land, managing to take King Ascertes captive. This forced Queen Efaritay to surrender unconditionally.

Ascertes and his wife are presumably deceased, executed or imprisoned until their deaths. However, a slim chance exists that they may still live today.