| breed | Thoroughbred | 
| color / sex / birth date | br. f ., 1904 | 
| breeder | Great Britain | 
| Dam line | Old Merlin mare | 
| foaling reference | Ан. | 
| Owner | Great Britain | 
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| Arc Light 
                                  (GB) Great Britain chestnut, 1893 | Prism 
                                  (GB) chestnut, 1880 | Uncas 
                                  (GB) bay, 1865 | 
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| Petrel 
                                  (GB) bay, 1887 | Peter 
                                  (GB) chestnut, 1876 | |
| Electric Light 
                                  (GB) br., 1876 |