please help me fast.....who was edmund?

Edmund, the bastard son to Gloucester, is resentful of his illegitimacy and having a cruel drive for power, he plots against his brother and father and succeeds. Once Cornwall dies, he gains even more power and Goneril and Regan vie for his hand. He plans to kill Cordelia and Lear after beating them in battle so that he can rule over a united Britain. He is forced to confess his crimes by Albany and killed by Edgar.