Ortegal ( 牝 1889 黒鹿毛 Bend Or )
 |-- Octagon ( 牡 1894 栗毛 Rayon d'Or )
 |-- Orienta ( 牝 1898 栗毛 Henry of Navarre )
 |   |-- Olympia ( 牝 1911 栗毛 Rock Sand )
 |   |   `-- Oval ( 牝 1921 栗毛 Fair Play )
 |   `-- Ormulu ( 牝 1912 栗毛 Fair Play )
 |   |   `-- Playwell ( 牝 1925 栗毛 Atwell )
 `-- Octoroon ( 牝 1899 栗毛 Hastings )
 |   |-- Sand Dune ( 牝 1908 Rock Sand )
 |   |   `-- May Loyd ( 牝 1921 栗毛 Omar Khayyam )
 |   |-- October ( 牡 1910 鹿毛 Rock Sand )
 |   `-- Oktibbena ( 牝 1911 栗毛 Rock Sand )
 |   |   |-- Sweepster ( 牡 1924 鹿毛 Sweep )
 |   |   |-- Killimick ( 牝 1925 鹿毛 Wrack )
 |   |   |-- Sweet Verbena ( 牝 1926 青毛 Negofol )
 |   |   `-- Okapi ( 牡 1930 黒鹿毛 Eternal )