Bleebok (牝 1941 黒鹿毛 Blue Larkspur)
 |-- Delta Queen (牝 1946 黒鹿毛 Bull Lea)
 |   |-- Olympic Queen (牝 1951 鹿毛 Olympic Zenith)
 |   |   |-- シルバーメダル  [豪] (牝 1961 栗毛 Al Dakhil)
 |   |   `-- Cherie Rose (牝 1962 鹿毛 Peter Flower)
 |   |-- Beautillion (牝 1953 青毛 Noor)
 |   |   `-- Delta Judge (牡 1960 黒鹿毛 Traffic Judge)
 |   |-- Silk Velvet (牝 1955 黒鹿毛 Mahmoud)
 |   |   |-- Silky Queen (牝 1959 鹿毛 Polynesian)
 |   |   |-- Some Cleo (牝 1963 鹿毛 Olympia)
 |   |   `-- Dee Dee Luxe (牝 1968 Cavan)
 |   |-- Apatontheback (牝 1958 鹿毛 Olympia)
 |   |   |-- Real Babe (牝 1973 栗毛 The Axe)
 |   |   `-- Head Teller (牝 1974 鹿毛 Silent Screen)
 |   `-- Advocator (牡 1963 鹿毛 Round Table)
 |-- Blue Whirl (牝 1948 鹿毛 Whirlaway)
 |   `-- Reelaway (牝 1955 黒鹿毛 War Relic)
 |       `-- Pass Away (牝 1971 鹿毛 Swing Pass)
 `-- Rarelea (牝 1949 鹿毛 Bull Lea)
     `-- Bramalea (牝 1959 黒鹿毛 Nashua)
         |-- Glorious Spring (牝 1968 鹿毛 Hail to Reason)
         |-- Roberto (牡 1969 鹿毛 Hail to Reason)
         |        1着 - 1972 英ダービー(G1)
         `-- Mullineaux (牡 1973 黒鹿毛 Hail to Reason)