Originally Posted by lostforever 
Isn't Ciri dead now right? or "gone". If so, these elves don't know about it?
No Ciri is alive and kicking. She just lives in another world now - possibly unreachable by her foes. It's even specifically mentioned in the game. Here's a screenshot (careful a little NSFW) from The Witcher 2:
http://i.imgur.com/3ur5M.jpg
Originally Posted by JDR13 
I don't think Jaques de Aldersberg was of Elder blood though.
It's "strongly suggested" in the first game though. He being a source [1] and all (although it's possible to be a source without being of the elder blood - but the references were too many IMHO).
[1]
Among sources, the descendants of Lara Dorren are regarded as even more special.
http://witcher.wikia.com/wiki/Source