Squirrel Mare (牝 1775 Squirrel)
 |-- Ceres (牝 1779 栃栗毛 Sweetwilliam)
 |        1着 - '82英オークス
 |-- Isabella (牝 1783 鹿毛 Eclipse)
 |   |-- Ibis (牝 1791 鹿毛 Woodpecker)
 |   |   `-- Isis (牝 1805 鹿毛 Sir Peter Teazle)
 |   `-- Iris (牝 1802 黒鹿毛 Sir Peter Teazle)
 |       |-- Loo Choo (牝 1815 鹿毛 Peruvian)
 |       `-- Miss Iris (牝 1824 黒鹿毛 Blucher)
 |-- Zara (牝 1784 鹿毛 Eclipse)
 |   `-- Swordsman (牡 1796 鹿毛 Prizefighter)
 `-- Isabel (牝 1787 鹿毛 Woodpecker)
     `-- Skyscraper Mare (牝 1795 鹿毛 Skyscraper)
         |-- Brainworm (牡 1801 栗毛 Buzzard)
         |-- Johanna (牝 1813 鹿毛 Selim)
         |-- Bobadil (牡 1813 栗毛 Rubens)
         `-- Wiseacre (牡 1820 栗毛 Rubens)