Coronis and Apollo

Coronis and Apollo were lovers and she became pregnant.There was some infidelity on Coronis's part and Apollo's spy raven tattled to him about it. In Apollo's rage he turned all crow's from white to black set his sister Artemis on Coronis. 
As Coronis was on her funeral pyre Apollo felt bad and had his son, Asclepius, cut from her womb.  

Death of Adonis

Here is another ancient greek myth drawing.
There was this time Adonis boasted he was a better hunter than Artemis, so Artemis sent a wild boar to kill him.
This is just one of the ways he supposedly died, but it's defiantly my favorite.