[Evisse the Blue]

The scene from TTT (not in the book) with Eowyn and Wormtongue speaking near Theodred's death bed could have been conceived as a homage (or reference) to Richard III.

Remember the scene, at the beginning of the play where Richard is trying to get Anne to marry him, at the funeral of her husband? He is cunningly trying to seduce her, she starts off by being justifiably angry, then, gradually, as he persists, she gives in. Eowyn too does look for a moment like she's about to to give in in that scene, don't you think?