The Sons of Gloucester

The Earl of Gloucester's two sons, both rightful and illegitimate, from Shakespeare's King Lear. Their subplot forms a parallel to the tale of filial devotion and ignorance as it's acted out by King Lear and Cordelia, except that this one culminates in a single-combat fight to the death for the crown of England. 

I was originally going to say which one I intended to be Edmund, and which one I intended to be Edgar, but I thought I'd leave you with Gloucester's own dilemma of who to trust.