One of them defeated the Bebrycean king
One member of this group had a pair of sons who were depicted on the throne of Amyclae and were named Anaxias and Mnasinas. Some stories claim that they invented a ritualized banquet to which the gods were invited known as the theoxenia, while ancient Greek sailors associated them with Saint Elmo's fire. In one adventure, they were aided by the informer Academus, after which they set up the usurper Menestheus on the throne and abducted Phisadie and Aethra. In another story, they married the Leucippides after killing Lynceus and Idas. One of them defeated the Bebrycean king Amycus in an athletic contest during their time with the Argonauts. Known for their skill as horsemen and boxers, they were raised by Tyndareus and, after one of them died, agreed to split their immortality. Their sisters were Clytemnestra and Helen of Troy. For 10 points, identify these sons of Leda, a pair of twin warriors.
One member of this group had a pair of sons who were depicted on the throne of Amyclae and were named Anaxias and Mnasinas.
the Dioscuri [or Castor and Pollux; or the Gemini; or the Castores; accept Polydeuces for "Pollux"; accept the Tyndarides until "Tyndareus" is read; accept the Leucippides (or Hilaeria and Phoebe) until "banquet" is read; prompt on "the Argonauts" or "the children of (Zeus or Tyndareus and) Leda"]