2) Proteus. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...1. Greek Mythology A sea god who could change his shape at will. 2. The satellite of Neptune that is sixth in distance from the planet. Latin Proteus, from Greek....

3) Helen. The Columbia Encyclopedia, Sixth Edition. 2001
...Helen, in Greek mythology, the most beautiful of women; daughter of Leda and Zeus, and sister of Castor and Pollux and Clytemnestra. While still a young girl Helen...

4) Notes: Book Fourth. Palgrave, Francis T., ed. 1875. The Golden Treasury
...to impart, and which he dies at last without imparting." NO. CCLXXVIII Line 13.—Proteus represented the everlasting changes united with the ever-recurrent sameness...