Primary

• George Joestar II Father of Johnny Joestar
• George Joestar II Father of Nicholas Joestar

Extended

• Johnny Joestar Brother of Nicholas Joestar
• Johnny Joestar Son of George Joestar II
• Johnny Joestar Grandfather of Joseph Joestar (JoJolion)
• Johnny Joestar Father of George Joestar III
• Johnny Joestar Husband of Rina Higashikata
• Nicholas Joestar Brother of Johnny Joestar
• Nicholas Joestar Son of George Joestar II