Ooh, I'd never seen that last picture before, thanks for posting! It does look Klimt-ish in style, I wonder if it is him or someone else...
I recently visited Gödöllö (Elisabeth's favourite palace in Hungary, near Budapest, now turned into museum) and noticed that there are lots of paintings and other pictures there which I hadn't seen anywhere else or in any books so far. Maybe because they're just in Hungary, they're not so well known. Unfortunately I don't have pictures of them, as you couldn't take photos in the museum and in the little time I had in the museum shop before it closed, I didn't find them there in any form. Maybe next time I go there I'll see if I can find reprints of any of them...