Acheron ( 牝 1878 青毛 Hermit )
 `-- Queen Bee ( 牝 1884 黒鹿毛 Muncaster )
 |   |-- Princess Bee ( 牝 1893 栗毛 Childwick )
 |   |   `-- Pierre Benite ( 牝 1906 栗毛 Childwick )
 |   |-- Princess Bee ( 牝 1893 栗毛 Royal Hampton )
 |   |   `-- Procope ( 牡 1903 栗毛 St. Bris )
 |   `-- Be Sure ( 牝 1898 栗毛 Surefoot )
 |   |   |-- Cocksure ( 牡 1905 栗毛 Count Schomberg )
 |   |   |-- Decision ( 牡 1907 栗毛 Count Schomberg )
 |   |   |-- Stedfast ( 牡 1908 栗毛 Chaucer )
 |   |   |-- Assurance ( 牝 1910 栗毛 Count Schomberg )
 |   |   `-- Dame Prudent ( 牝 1912 鹿毛 Chaucer )