Sisyphus. In Greek mythology Sisyphus or Sisyphos was the king of Ephyra.
He was punished for his self-aggrandizing craftiness and deceitfulness by being forced to roll an immense boulder up a hill only for it to roll down every time it neared the top, repeating this action for eternity. Through the classical influence on modern culture, tasks that are both laborious and futile are therefore described as Sisyphean.
Linguistics Professor R. S. P. Beekes has suggested a pre-Greek origin and a connection with the root of the word sophos. German mythographer Otto Gruppe thought that the name derived from sisys, in reference to a rain-charm in which goats' skins were used.
Sisyphus was the son of King Aeolus of Thessaly and Enarete and the brother of Salmoneus. He married the Pleiad Merope by whom he became the father of Glaucus, Ornytion, Thersander, Almus and Porphyrion.
Sisyphus was the grandfather of Bellerophon through Glaucus, and Minyas, founder of Orchomenus, through Almus. Sisyphus was the founder and first king of Ephyra. King Sisyphus promoted navigation and commerce but was avaricious and deceitful. He also killed travellers and guests to his palace, a violation of xenia, which fell under Zeus' domain, thus angering the god. He took pleasure in these killings because they allowed him to maintain his iron-fisted rule. Sisyphus and his brother Salmoneus were known to hate each other