Did any of the EU material come from George Lucas?
More specifically, were there any details or facts or events that were:
- NOT covered in G- or T- canon works at all.
- NOT designed to set up something for the future G or T canon works.
- Included in C-canon works (aka Extended Universe).
- Were explicitly known to originate fully from George Lucas (e.g. he told/suggested the book author to use a specific idea/fact/event/character). Not "approved" by Lucas, but "invented" by him, for lack of a better word.
Yes, I'm aware that things stated by Lucas automatically count as G-canon even if included in overall-C-canon works. The question is about such facts.
I'm obviously excluding movie novelizations entirely. They mostly fall under #1/2.
Yes I'm aware that as of 2014, Disney intends to make canon changes. This question pertains to pre-2013 canon rules.