Coo-ee (牝 1899 鹿毛 Trenton)
 |-- Cooya (牝 1906 栗毛 The Victory)
 |   |-- Austral (牝 1915 栗毛 Sunder)
 |   |   |-- Robespierre (牡 1922 鹿毛 Phalaris)
 |   |   `-- Aryan (牝 1923 鹿毛 Buchan)
 |   `-- Actrice (牝 1918 黒鹿毛 Achtoi)
 |       `-- Actor (牡 1934 鹿毛 Ortello)
 |-- Bill and Coo (牝 1909 黒鹿毛 William the Third)
 |   |-- Polylogy (牝 1914 鹿毛 Polymelus)
 |   |   |-- Sonora (牝 1918 鹿毛 Land of Song)
 |   |   `-- Royal Romance (牝 1923 Comedy King)
 |   |-- Tete-a-Tete (牝 1917 芦毛 The Tetrarch)
 |   |   |-- Gay Baby (牝 1924 芦毛 Gay Crusader)
 |   |   |-- Booktalk (牝 1926 芦毛 Buchan)
 |   |   |-- Careless Nun (牝 1930 栗毛 Abbots Trace)
 |   |   `-- Conversation Piece (牝 1935 芦毛 Orpen)
 |   |-- Bouleverse (牡 1918 鹿毛 The Tetrarch)
 |   |-- Rackety Coo (牝 1919 黒鹿毛 Corcyra)
 |   |   |-- Cinq a Sept (牝 1924 鹿毛 Roi Herode)
 |   |   |-- Rackety Lassie (牝 1928 鹿毛 Solario)
 |   |   |        1着 - ヨークシャーオークス
 |   |   `-- Cuddlededee (牝 1936 鹿毛 Bolingbroke)
 |   `-- Chinese Character (牝 1930 黒鹿毛 Winalot)
 |       |-- Golden Reference (牝 1937 鹿毛 Gold Bridge)
 |       `-- Golden Mark (牝 1944 鹿毛 Gold Bridge)
 `-- Call o' the Wild (牡 1913 鹿毛 Polymelus)