The Probert Encyclopaedia of Greek & Roman Mythology

ULTOR

Ultor (the Avenger) was a title of the Roman god Mars.
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ULYSSES

Ulysses was the Roman name for Odysseus.
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URANIA

Urania was the muse of astronomy.
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URANUS

In Greek mythology, Uranus was a son of Gaea. He later married Gaea.
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