Here's a thing. Baron Corvo is of course the tame jackdaw in That Hideous Strength, and I thought that was just a clever name based on the fact that a jackdaw is a corvid (family of birds). I've discovered, though, that Baron Corvo was the title of a real person, Frederick Rolfe, so it seems to me likely (or at least possible) that Lewis was aware of this and named the jackdaw after him, perhaps due to some perceived similarity between the person and the character of the bird as Lewis imagined it?
Any thoughts or further information as always gratefully received...