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)
 |       `-- Tsuma (牝 1929 黒鹿毛 Spearhead)
 |-- Tete-a-Tete (牝 1917 芦毛 The Tetrarch)
 |   |-- Booktalk (牝 1926 芦毛 Buchan)
 |   |   |-- Borrow (牝 1931 芦毛 Tremola)
 |   |   `-- Serial (牝 1932 芦毛 Solario)
 |   |-- Careless Nun (牝 1930 栗毛 Abbots Trace)
 |   |   |-- Marchons (牡 1944 栗毛 Medicis)
 |   |   `-- Tour d'Argent (牝 1947 鹿毛 Medicis)
 |   `-- Conversation Piece (牝 1935 芦毛 Orpen)
 |       `-- Society's Vote (牝 1944 栗毛 Wyndham)
 |-- Bouleverse (牡 1918 鹿毛 The Tetrarch)
 |-- Rackety Coo (牝 1919 黒鹿毛 Corcyra)
 |   |-- Cinq a Sept (牝 1924 鹿毛 Roi Herode)
 |   |   |-- Assignation (牝 1930 鹿毛 Teddy)
 |   |   |-- Gentle Tryst (牝 1933 鹿毛 Sir Gallahad)
 |   |   `-- Twilight Tryst (牝 1935 栗毛 Gallant Fox)
 |   `-- Cuddlededee (牝 1936 鹿毛 Bolingbroke)
 |       `-- Closeburn (牡 1944 黒鹿毛 Bellacose)
 `-- Chinese Character (牝 1930 黒鹿毛 Winalot)
     |-- Golden Reference (牝 1937 鹿毛 Gold Bridge)
     |   `-- Golden Guide (牝 1946 鹿毛 Lighthouse)
     `-- Golden Mark (牝 1944 鹿毛 Gold Bridge)
         `-- Golden Record (牝 1956 黒鹿毛 ニンバス)