| breed | Thoroughbred |
| color / sex / birth date | bay c ., 1975 |
| breeder | USA |
| Sire line | Nasrullah |
| Dam line | Constantia |
| foaling reference | Ам. |
| Owner | USA |
|
Secretariat
(USA)
USA chestnut, 1970 |
Bold Ruler
(USA)
br., 1954 |
Nasrullah
(GB)
bay, 1940 |
|
Miss Disco
(USA)
bay, 1944 |
||
|
Somethingroyal
(USA)
bay, 1952 |
Princequillo
(IRE)
bay, 1940 |
|
|
Imperatrice
(USA)
bay, 1938 |
||
|
Artists Proof
(USA)
USA bay, 1967 |
Ribot
(GB)
bay, 1952 |
Tenerani
(ITY)
bay, 1944 |
|
Romanella
(ITY)
chestnut, 1943 |
||
|
Be Ambitious
(USA)
br., 1958 |
Ambiorix II
(FR)
d.-bay, 1946 |
|
|
Be Faithful
(USA)
br., 1942 |