The Labours of Hercules or Labours of Heracles (, ) are a series of episodes concerning a penance carried out by Heracles, the greatest of the Greek heroes, whose name was later romanised as Hercules. They were accomplished at the service of King Eurystheus. The episodes were later connected by a continuous narrative. The establishment of a fixed cycle of twelve labours was attributed by the Greeks to an epic poem, now lost, written by Peisander, dated about 600 BC. Having tried to kill Heracles ever since he was born, Hera induced a madness in him that made him kill his wife and children. Afterwards, Heracles went to the Oracle of Delphi to atone, where he prayed to the god Apollo for guidance. Heracles was told to serve Eurystheus, king of Mycenae, for ten years. During this time, he was sent to perform a series of difficult feats, called labours. History of Heracles Driven mad by Hera (queen of the gods), Heracles slew his sons and his wife, Megara. Although, according to Euripides in Herakles, it was not until after Heracles had completed his labours and on his return from the Underworld that he murdered Megara and his children. After recovering his sanity, Heracles deeply regretted his actions; he was purified by King Thespius, then traveled to Delphi to inquire how he could atone for his actions. Pythia, the Oracle of Delphi, advised him to go to Tiryns and serve his cousin, King Eurystheus, for ten years, performing whatever labours Eurystheus might set him; in return, he would be rewarded with immortality. Heracles despaired at this, loathing to serve a man whom he knew to be far inferior to himself, yet fearing to oppose his father Zeus. Eventually, he placed himself at Eurystheus's disposal. Eurystheus originally ordered Heracles to perform ten labours. Heracles accomplished these tasks, but Eurystheus refused to recognize two: the slaying of the Lernaean Hydra, as Heracles' nephew and charioteer Iolaus had helped him; and the cleansing of the Augean stables, because Heracles accepted payment for the labour or in some versions of this story it was the Stymphalian Birds that was discounted instead of the Augean stables for the help of Athena giving him bronze rattles. Eurystheus set two more tasks (fetching the Golden Apples of Hesperides and capturing Cerberus), which Heracles also performed, bringing the total number of tasks to twelve. The twelve labours As