Did I miss something in the five main books, or did he only ever identify himself as being a "Lord Brynden" in his past life? I feel like all the YouTubers I listened to before I started reading the books (and had to stop listening to once I started because their videos started being Real Spoilers instead of simply pleasant background noise where I could occasionally go "I know that guy!" when they say Jon Snow) just sorta casually call him [extended spoilers??? I genuinely don't know]>!Bloodraven/Brynden Rivers!<, but after having finished ADWD just now and looking back through Bran's chapters and the wiki, I don't see any concrete mention of who "Lord Brynden" might call kin. Is this all cross referenced from other books?
Also, was any significance [potential Three Eyed Crow identity]>!Brynden Rivers!< might have even hinted at in the five main books, or is that all also in Dunk & Egg/WoIaF/Fire & Blood?