| breed | Thoroughbred | 
| color / sex / birth date | f ., 1949 | 
| breeder | |
| Sire line | Matchem | 
| Dam line | Toxophilite mare | 
| Owner | 
| 
             
                                   Some Chance 
                                  (USA)             
                                         USA chestnut, 1939  | 
        
        
             
                                   Chance Play 
                                  (USA)             
                         chestnut, 1923  | 
        
        
             
                                   Fair Play 
                                  (USA)             
             chestnut, 1905  | 
    
| 
             
                                    
                                               
             | 
    ||
| 
             
                                   Some Pomp 
                                  (USA)             
                         bay, 1931  | 
        
        
             
                                   Pompey 
                                  (USA)             
             bay, 1923  | 
    |
| 
             
                                    
                                               
             | 
    ||
| 
             
                                   Bourtai 
                                  (USA)             
                                         USA bay, 1942  | 
        
        
             
                                   Stimulus 
                                  (USA)             
                         chestnut, 1922  | 
        
        
             
                                   Ultimus 
                                  (USA)             
             chestnut, 1906  | 
    
| 
             
                                   Hurakan 
                                  (USA)             
             bay, 1911  | 
    ||
| 
             
                                   Escutcheon 
                                  (USA)             
                         bay, 1927  | 
        
        
             
                                   Sir Gallahad III 
                                  (FR)             
             bay, 1920  | 
    |
| 
             
                                   Affection 
                                  (USA)             
             bay, 1914  |