Trimestral (牝 1914 鹿毛 William the Third)
 |-- Trefoil (牝 1919 黒鹿毛 Rochester)
 |   |-- Abbots Toil (牝 1926 鹿毛 Abbots Trace)
 |   |   `-- Sly Abbess (牝 1935 栗毛 Foxlaw)
 |   |-- Trelissia (牝 1933 黒鹿毛 Bhuidhaonach)
 |   |   |-- Commandant (牝 1940 鹿毛 Bosworth)
 |   |   |-- Fair Portia (牝 1941 鹿毛 Fair Trial)
 |   |   `-- Set Sail (牝 1942 黒鹿毛 Blue Peter)
 |   `-- Lori-El (牝 1954 黒鹿毛 Eternal Reward)
 |-- Tryst (牝 1921 鹿毛 Rochester)
 |   |-- Young Lover (牡 1930 黒鹿毛 Son-in-Law)
 |   `-- Assignation (牡 1932 鹿毛 Son-in-Law)
 |-- Trilogy (牝 1923 鹿毛 Son-in-Law)
 |   |-- Scarlet Tiger (牡 1930 鹿毛 Colorado)
 |   `-- Light Brocade (牝 1931 黒鹿毛 Galloper Light)
 |       |    1着 - 英オークス、チェヴァリーパークS、モールコームS
 |       `-- Dark Brocade (牝 1940 鹿毛 Le Ksar)
 |-- Trimdon (牡 1926 鹿毛 Son-in-Law)
 `-- Foxhunter (牡 1929 栗毛 Foxlaw)