| breed | Thoroughbred | 
| color / sex / birth date | bay f ., 1936 | 
| breeder | Argentina | 
| Sire line | Eclipse | 
| Dam line | Young Melbourne mare | 
| Owner | Argentina | 
| 
             
                                   Congreve 
                                  (ARG)             
                                         Argentina bay, 1924  | 
        
        
             
                                   Copyright 
                                  (GB)             
                         bay, 1918  | 
        
        
             
                                   Tracery 
                                  (USA)             
             br., 1909  | 
    
| 
             
                                   Rectify 
                                  (GB)             
             chestnut, 1910  | 
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| 
             
                                   Hache 
                                  (ARG)             
                                         Argentina bay, 1921  | 
        
        
             
                                   Your Majesty 
                                  (GB)             
                         bay, 1905  | 
        
        
             
                                   Persimmon 
                                  (GB)             
             bay, 1893  | 
    
| 
             
                                   Yours 
                                  (GB)             
             bay, 1894  | 
    ||
| 
             
                                   Betha 
                                  (ARG)             
                         bay, 1913  | 
        
        
             
                                   Cyllene 
                                  (GB)             
             chestnut, 1895  | 
    |
| 
             
                                   Alfa 
                                  (ARG)             
             bay, 1904  |