The characters of "The Tale of Genji," whose real names are revealed, are only FUJIWARA no Koremitsu and MINAMOTO no Yoshikiyo, who are the retainers of Hikaru Genji, and most of the characters such as Hikaru Genji are known only by their 'nicknames.'
なお、『源氏物語』の登場人物の中で本名が明らかなのは光源氏の家来である藤原惟光と源良清くらいであり、光源氏をはじめとして大部分の登場人物は「呼び名」しか明らかではない。