
1) Moon of Saturn
Found on
https://www.crosswordclues.com/clue/polydeuces
[moon] Polydeuces, or Saturn XXXIV (34), is a small natural satellite of Saturn that is co-orbital with the moon Dione and librates around its trailing Lagrangian point ({L5}). Its diameter is estimated to be 2–3 km. It is pronounced z {respell|POL|i|DEW|seez}; Πολυδεύκης. Dione`s other co-orbital moon is Helene, which is bigger...
Found on
http://en.wikipedia.org/wiki/Polydeuces_(moon)

(from the article `Dione`) ...circular orbit at a mean distance of 377,400 km (234,500 miles), which is within the outer part of Saturn`s tenuous E ring. It is accompanied in ... ...are summarized in the table. Names, traditional numbers, and orbital and physical characteristics for the first 18 moons discovered are listed ... [2 rel...
Found on
http://www.britannica.com/eb/a-z/p/90

Polydeuces was a Greek hero. He was one of the argonauts.
Found on
http://www.localhistories.org/greekmyths.html
No exact match found.