| Name | Piorun (AH) |
| YoB | 1913 |
| Sex | horse |
| Colour | bay |
| Sire | Boreazelle (US) or The Zoo (US) |
| Dam | Miss Roberts (US), 1899 |
| Damsire | Robert L. (US), 1884 |
| Breeder | Gestüt Luka (Graf Ladislaus Baworowski) |
| Birthplace | Ostrow, Bez. Tarnopol, Galizien () |
| Piorun (AH), 1913 | |||
| Miss Roberts (US), 1899 | Robert L. (US), 1884 | Haw Patch (US), 1872 | |
| Nora Shy (US) | |||
| Lady Granger (US) | Kentucky Prince (US), 1870 | ||
| ? |