清和源氏 Seiwa Genji

descended from 56th emperor Seiwa; origin of many samurai clans.

Cadet branches

• Ashikaga clan
• Hatakeyama clan
• Hosokawa clan
• Imagawa clan
• Mori
• Nanbu clan
• Nitta clan
  • Matsudaira clan
    • Tokugawa clan
• Ogasawara clan
• Ōta clan
• Satake clan
• Satomi clan
• Shiba clan
• Takeda clan
• Toki clan
• others