Bobby Fischer was 13 years old when he played this game. He is already using the Najdorf Sicilian (5.-a6), his main defence against 1.e4 during his whole career.
About the opponent I don't know much. He played like about ELO 2100 this game.
"Bobby" Fischer was a US born chess grandmaster who in 1972 became World Chess Champion.
He also wrote some chess books ( e.g. My 66 memorable chess games).
In 1975 he officially resigned the title when FIDE, the international chess federation, refused to accept his conditions for a title defense.
Fischer later lived in Iceland where he got political asylum after the insane US Government under Bush has banned him for playing a match in Yugoslavia against Boris Spasski.