Easy Lass ( 牝 1940 黒鹿毛 Blenheim )
 |-- Coaltown ( 牡 1945 鹿毛 Bull Lea )
 |-- Wistful ( 牝 1946 栗毛 Sun Again )
 |   |-- Gen. Duke ( セ 1954 黒鹿毛 Bull Lea )
 |   `-- Gen Duke ( 牡 1954 黒鹿毛 Bull Lea ) 海外5勝
 |-- Rippling Rythm ( 牝 1951 黒鹿毛 Bull Lea )
 |   `-- Island Creek ( 牝 1960 青毛 Khaled )
 |   |   |-- Ribofilio ( 牡 1966 鹿毛 Ribot )
 |   |   |        2着 - 1969 英セントレジャー(G1)
 |   |   |-- Belle Sorella ( 牝 1969 黒鹿毛 Ribot )
 |   |   `-- Island Cove ( 牝 1973 黒鹿毛 Never Bend )
 `-- Rosewood ( 牝 1954 黒鹿毛 Bull Lea )
 |   `-- Rose Court ( 牝 1963 鹿毛 Court Martial )
 |   |   `-- Tim the Tiger ( 牡 1976 鹿毛 Nashua )