| Name | Hydra (AH) |
| YoB | 1908 |
| Sex | mare |
| Colour | bay |
| Sire | Caid (US), 1893 |
| Dam | Muriel Worthy (US), 1904 |
| Damsire | Axworthy (US), 1892 |
| Breeder | Gestüt Wola (Graf Andreas Potocki) |
| Birthplace | Krzeszowice, Bez. Chrzanow, Galizien (Krzeszowice, Polska) |
| Colour | Gender | Pedigree | Breeder | ||
|---|---|---|---|---|---|
| 1915 | Dankwart (AH) | dark bay | horse | Gayton (US), 1892 - Hydra (AH), 1908 | Rudolf Piatnik |
| 1916 | Emmich (AH) | bay | horse | Gayton (US), 1892 - Hydra (AH), 1908 | Rudolf Piatnik |
| 1917 | Dankwart Huga (AH) | mare | Gayton (US), 1892 - Hydra (AH), 1908 | Rudolf Piatnik |