| Name | Rolla (AH) |
| YoB | 1897 |
| Sex | mare |
| Colour | grey |
| Sire | Bonnie M George (US), 1886 |
| Dam | Worowka (RU), 1884 |
| Damsire | |
| Breeder | Weissenbacher Aladár |
| Birthplace | Budapest, Ungarn (Budapest, Magyarország) |
| Rolla (AH), 1897 | Bonnie M George (US), 1886 | William H. Vanderbilt (US) | |
| Brown Nib (US), 1870 | Flying Cloud (Lovejoy's) (US) | ||
| Nib (US) | |||
| Worowka (RU), 1884 | |||