| Name | Gustl (AH) |
| YoB | 1901 |
| Sex | mare |
| Colour | bay |
| Sire | Callisto (US) or George A. (US) |
| Dam | Tummle dich (AH), 1894 |
| Damsire | Prince Warwick (US), 1884 |
| Breeder | Anton Weidinger & Gustav Wöss |
| Birthplace | Wien, Nieder-Österreich (Wien, Niederösterreich) |
| Gustl (AH), 1901 | |||
| Tummle dich (AH), 1894 | Prince Warwick (US), 1884 | Alcona (US), 1877 | |
| Warwick Maid (US), 1878 | |||
| Medarda I. (RU), 1882 | ? | ||
| ? |