Fourfold ( 牝 1916 芦毛 The Tetrarch )
 |-- Empire Builder ( 牡 1926 芦毛 Son-in-Law )
 |-- Lindos Ojos ( 牝 1928 芦毛 Buen Ojo )
 |   |-- Jennie ( 牝 1936 鹿毛 Apelle )
 |   |   `-- Skylarking ( 牝 1947 鹿毛 Mirza )
 |   |-- Joan ( 牝 1937 栗毛 Blenheim )
 |   |   |-- Amina ( 牝 1945 栗毛 Solario )
 |   |   |-- Kerima ( 牝 1946 鹿毛 Bois Roussel )
 |   |   `-- But Beautiful ( 牝 1947 栗毛 Tehran )
 |   |-- Das Ojos ( 牝 1940 鹿毛 Dastur )
 |   |   `-- Eire Express ( 牝 1947 鹿毛 Nasrullah )
 |   `-- Linaria ( 牝 1943 栗毛 Turkhan )
 |   |   |-- Arctic Line ( 牝 1953 栗毛 Arctic Prince )
 |   |   |-- Linear ( 牝 1956 栗毛 Nearco )
 |   |   `-- Courting ( 牝 1957 栗毛 Supreme Court )
 `-- Birchfield ( 牝 1938 芦毛 Scarlet Tiger )
 |   `-- Gradient ( 牝 1948 Turkhan )
 |   |   `-- Shiralee ( 牝 1954 Le Sage )