theyoungmillionaire  apparently has made some fiat to btc deals with user https://bitcointalk.org/index.php?action=profile;u=914465 and https://bitcointalk.org/index.php?action=profile;u=1179651   on the forum in this thread https://bitcointalk.org/index.php?topic=5113147.msg49868494#msg49868494

Considering that fiat was involved you might get some leeds on his identity.