An immortal who served as the first teacher for Rebecca Horne. He was of Tiryns, which was located on the Argolid plain, between Nafplion and Argos in the eastern Peloponnese in Greece. The site had been inhabited since the Neolithic Age but reached its greatest period of importance in the 13th century BC as a major center of the Mycenaean culture. Aganesthes of Tiryns was a legendary sword master. He became the teacher of Tjanefer and Rebecca. It is speculated that through him, Rebecca gained the Methuselah Stone.