| Name | Ernö (AH) |
| YoB | 1905 |
| Sex | horse |
| Colour | bay |
| Sire | Happy Jim (US), 1892 |
| Dam | Black Bessie (AH), 1887 |
| Damsire | ? |
| Breeder | Báró Sennyey Géza |
| Birthplace | Csörgő, Kom. Semplin, Ungarn (Čerhov, Slovenská republika) |
| Ernö (AH), 1905 | Happy Jim (US), 1892 | Young Jim (US), 1874 | George Wilkes (US), 1856 |
| Bertha Bay (US) | Bonnie Bay (US), 1881 | ||
| Black Bessie (AH), 1887 | ? | ? | |
| ? | |||
| ? | ? | ||
| ? |