Heras Jealousy

Among the most famous, Hera's jealousy is Hercules; whos name mean the glory of Hera. Hera persecuted the famous hero from the time before he could walk for the simple reason, he was Zeus's father. But another woman, and Almene was his mother. The fact that Hera was not Hercules mother, and despite her actions. Such as sending snakes to kill him when he was an infant; she served as his nurse when he was an infant. With all the women Zeus seduced, Hera found one way or another to persecute them.
 http://ancienthistory.about.com/cs/grecoromanmyth1/g/hera.htm