| Name | May Morning (AH) |
| YoB | 1891 |
| Sex | mare |
| Colour | |
| Sire | Americus (ex Almont Clay Jr) (US), 1883 |
| Dam | Merry go round, Hbl. |
| Damsire | |
| Breeder | Graf Josef Colloredo-Mels |
| Birthplace | Esslingen, Bez. Groß-Enzersdorf, Nieder-Österreich (Esslingen, Niederösterreich) |