Io (牝 1836 栗毛 Taurus)
 |-- Glaucus Mare (牝 1842 栗毛 Glaucus)
 |   `-- Tomyris (牝 1851 鹿毛 Sesostris)
 |       |-- Eastern Princess (牝 1858 栗毛 Surplice)
 |       |-- Gownsman (牡 1861 Surplice)
 |       |-- Danish Rose (牝 1863 栗毛 Surplice)
 |       `-- Hester (牝 1867 鹿毛 Thormanby)
 |-- Isis (牝 1844 鹿毛 Slane)
 |   `-- Isilia (牝 1861 鹿毛 Newminster)
 |       |-- Invicta (牝 1871 栗毛 Blair Athol)
 |       `-- Clanronald (牡 1873 鹿毛 Blair Athol)
 `-- Lapidist (牡 1849 鹿毛 Touchstone)