Artemis

    Artemis is the goddess of  chastity, virginity, the moon, the hunt,  and the natural environment.  She is daughter of  Zeus and Leto.  Her roman form  is Diana. Her symbol are arrows, bow, hunting dog and moon.  Her mother Leto gave birth to her and Apollo on an island  called Ortygia. Her twin brother is Apollo.  When Artemis  was born she helped her mother give birth to Apollo.

I got some of the information  in http://www.greekmythology.com/Olympians/Artemis/artemis.html, http://riordan.wikia.com/wiki/Hunters_of_Artemis, en.wikipedia.org/wiki/Artemis#Birth

She also has a group called the The Hunters of Artemis. It is only for girls.  Girls that  chose too  be in the hunters of Artemis they can't decide to do it they have to show bravery.  If they do end up being on the team / groups they swore of loyalty to join her in the  Hunt they reject boys for the rest of their lives. They become immortal; as long as they do not break their vows.