Passan (牝 1900 鹿毛 Hamburg)
 |-- Fox Trot (牝 1914 栗毛 Star Shoot)
 |   `-- Toddle (牝 1919 栗毛 Celt)
 |       |-- Dr. Freeland Dr. Freeland [米] (牡 1926 栗毛 Light Brigade) 海外25勝
 |       |        1着 - プリークネスS
 |       `-- Swivel (牝 1930 鹿毛 Swift and Sure)
 |-- Post Mark (牝 1915 青毛 Star Shoot)
 |   `-- Postage (牝 1925 栗毛 Fair Play)
 |       |-- Posted (牝 1934 黒鹿毛 Swift and Sure)
 |       `-- Penny Postal (牝 1936 栗毛 High Time)
 |-- Passing Shower (牝 1916 鹿毛 Ormondale)
 |   `-- Katrina (牝 1922 鹿毛 Brown Prince)
 |       |-- Mokatam (牡 1927 鹿毛 Bud Lerner)
 |       |-- Lucille Wright (牝 1930 鹿毛 Bud Lerner)
 |       `-- Katydid (牝 1935 鹿毛 Display)
 |-- Laurano (牡 1921 黒鹿毛 Peter Pan)
 `-- Susan Grover (牝 1923 栗毛 Ballot)
     `-- Susan Thatcher (牝 1931 黒鹿毛 General Thatcher)
         `-- Sundodger (牡 1937 黒鹿毛 Bull Dog)