1) Hercules won a contest for the hand of Iole in marriage but was refused by her father Eurytus, leading to a fight where Eurytus's son died.
2) Hercules served Queen Omphale of Lydia for three years after consulting the Oracle at Delphi.
3) Hercules fell in love with and married Deianeira but she accidentally poisoned him with the blood of the dying centaur Nessus, leading to Hercules' death.