Saint Joan (牝 1918 黒鹿毛 Willbrook)
 |-- Double Life (牝 1926 栗毛 Bachelor's Double)
 |   |-- Nymph Errant (牝 1932 栗毛 Hurry On)
 |   |   `-- Fairwell (牡 1942 鹿毛 Fairway)
 |   |-- Precipitation (牡 1933 栗毛 Hurry On)
 |   |-- Holywell (牡 1935 鹿毛 Blandford)
 |   |-- Casanova (牡 1936 栗毛 Hyperion)
 |   |-- Doubleton (牝 1938 鹿毛 Bahram)
 |   |   |-- Daily Double (牝 1943 鹿毛 Fair Trial)
 |   |   |-- Didima (牝 1944 黒鹿毛 Nearco)
 |   |   |-- Duplicity (牝 1945 鹿毛 Nearco)
 |   |   |-- Double Eclipse (牡 1947 栗毛 Hyperion)
 |   |   |        3着 - 1950 英ダービー(G1)
 |   |   |-- Nivrag (牡 1953 黒鹿毛 Pink Flower)
 |   |   `-- Meld's Relation (牝 1956 鹿毛 The Phoenix)
 |   |-- Persian Gulf (牡 1940 鹿毛 Bahram)
 |   `-- Fairly (牝 1941 鹿毛 Fairway)
 |       |-- Judicate (牡 1949 鹿毛 Hyperion)
 |       `-- Astraeus (牡 1951 栗毛 Borealis)
 |-- Joan Haste (牝 1927 栗毛 Bachelor's Double)
 |   `-- First Off (牝 1935 栗毛 Hurry On)
 |       `-- Start Point (牝 1943 鹿毛 Lighthouse)
 `-- Joan Orpen (牝 1937 Orpen)
     `-- Sea Tide (牝 1944 黒鹿毛 Seabiscuit)
         `-- シーバーム Sea Balm [米] (牝 1950 栗毛 Fair Truckle)