Talk:Andre of Astora/@comment-74.193.254.51-20131217174640/@comment-6003396-20131218102651

I believe I've found it. It's from the design works interview. Full English translation:
 * Creating the world Part 1
 * Creating the world Part 2
 * NPCs and Monsters Part 1 - Part concerning Andre is here
 * NPCs and Monsters Part 2
 * Weapons and Equipment Part 1
 * Weapons and Equipment Part 2

It only mentions that Andre was originally a descendant of Gwyn. Doesn't seem to mention anywhere that he was the firstborn or that the first born was taken out of the game, although I haven't read the entire thing yet. I only just found it. Makes me wonder if there is some other interview out there, but this appears to be the one that EpicNameBro was talking about.