| Name | Wilhelmi (AH) |
| YoB | 1898 |
| Sex | horse |
| Colour | chestnut |
| Sire | Prince Warwick (US), 1884 |
| Dam | The Great Gun XII, Norf. (AH), 1880 |
| Damsire | The Great Gun, Norf. (UK), 1869 |
| Breeder | K. k. Staatsgestüt |
| Birthplace | Piber, Bez. Pettau, Steiermark (Piber, Steiermark) |