Carson Ellis is an illustrator from the US, and is married to a Colin Meloy from The Decemberists, together they are working on a children's book called Wildwood, it's being published in September, but Ellis has released some images on her blog, and they look pretty amazing. Can't wait to see the whole thing.
Ellis also does all the album artwork for The Decemberists
here, here and here. I would love to see them live one of these days.