Cinquepace (牝 1934 鹿毛 Brown Bud)
 `-- Imperatrice (牝 1938 黒鹿毛 Caruso)
     |-- Scattered (牝 1945 栗毛 Whirlaway)
     |   `-- Hide and Seek (牝 1952 栗毛 Alibhai)
     |-- Imperium (牡 1946 黒鹿毛 Piping Rock)
     |-- Somethingroyal (牝 1952 鹿毛 Princequillo)
     |   |-- Cherryville (牝 1958 鹿毛 Correspondent)
     |   |-- Sir Gaylord (牡 1959 黒鹿毛 Turn-to)
     |   |-- ファーストファミリー (牡 1962 栗毛 First Landing)
     |   |-- Swansea (牝 1963 栗毛 Turn-to)
     |   |-- Syrian Sea (牝 1965 鹿毛 Bold Ruler)
     |   |-- ロイヤルタタン Royal Tatan [米] (牡 1966 栗毛 Tatan)
     |   |-- Loyal Land (牝 1967 芦毛 Tillman)
     |   |-- The Bride (牝 1969 鹿毛 Bold Ruler)
     |   |-- Secretariat (牡 1970 栗毛 Bold Ruler)
     |   |-- Somethingfabulous (牡 1972 鹿毛 Northern Dancer)
     |   `-- Queen's Colours (牝 1976 栗毛 Reviewer)
     |-- Imperial Hill (牝 1956 鹿毛 Hill Prince)
     |   |-- Chere Yvonne (牝 1961 鹿毛 Nantallah)
     |   |-- Hula Girl (牝 1963 鹿毛 Native Dancer)
     |   |-- Summer Hill (牝 1967 鹿毛 Sir Gaylord)
     |   |-- Fichte (牡 1971 鹿毛 Never Bend)
     |   `-- Colombade (牝 1973 Boldnesian)
     `-- Speedwell (牝 1960 鹿毛 Bold Ruler)
         |-- Young Look (牝 1967 First Landing)
         |-- Quick Cure (牝 1971 栗毛 Dr. Fager)
         `-- エリモグリーク (牝 1972 鹿毛 Native Charger)