| Name | Sir William (AH) |
| YoB | 1896 |
| Sex | horse |
| Colour | bay |
| Sire | Sir Gothard (US), 1886 |
| Dam | Ajax, Hbl. (AH), 1890 |
| Damsire | Ajax, Hbl. |
| Breeder | Josef Jetzinger |
| Birthplace | Gundholling, Bez. Braunau, Ober-Österreich (Gundholling, Oberösterreich) |
| Sir William (AH), 1896 | Sir Gothard (US), 1886 | St Gothard (US), 1876 | George Wilkes (US), 1856 |
| Berry (US) | Auditor (US), 1871 | ||
| Ajax, Hbl. (AH), 1890 | Ajax, Hbl. | ? | |
| ? | |||
| e. Landes-St. | ? | ||
| ? |