| Meno | Castor (AH) |
| Rok nar. | 1909 |
| Pohlavie | žrebec |
| Farba | hnedá |
| Otec | Iquique (US), 1891 |
| Matka | Gagara (Gahara) (RU), 1900 |
| Otec matky | |
| Chovateľ | Oswald Veth |
| Miesto narodenia | Sternberg, Mähren (Šternberk, Česká republika) |
| Castor (AH), 1909 | Iquique (US), 1891 | Clay (US), 1879 | Electioneer (US), 1868 |
| Maid of Clay (US) | |||
| Effie (US), 1882 | Abdallah Mambrino (US), 1870 | ||
| Emma P. (US) | |||
| Gagara (Gahara) (RU), 1900 | |||