Sarcophagus with married couple and dioscuri

In Greek and Roman mythology, Castor and Pollux, or Kastor and Polydeuces, were twin brothers, together known as the Dioscuri or Dioskouroi. Their mother was Leda, but they had different fathers; Castor was the mortal son of Tyndareus, the king of Sparta, while Pollux was the divine son of Zeus, who seduced Leda in the guise of a swan. Though accounts of their birth are varied, they are sometimes said to have been born from an egg, along with their twin sisters or half-sisters Helen of Troy and Clytemnestra.在希腊与罗马神话体系中，卡斯托尔与波吕杜克斯（Kastor与Polydeuces）为孪生兄弟，二人合称为狄俄斯库里（Dioscuri / Dioskouroi）。他们的母亲均为勒达（Leda），但生父却各不相同：卡斯托尔是斯巴达国王廷达瑞俄斯（Tyndareus）的凡胎之子，而波吕杜克斯则是宙斯（Zeus）的神裔之子——宙斯曾化作天鹅引诱勒达，诞下二人。尽管关于二人出生的记载各有差异，传说他们有时会与孪生姐妹（或同母异父姐妹）特洛伊的海伦（Helen of Troy）及克吕泰涅斯特拉（Clytemnestra）一同从一枚卵中降生。