| Name | May Day (US) |
| YoB | 1877 |
| Sex | mare |
| Colour | |
| Sire | Wissahickon (US), 1869 |
| Dam | |
| Damsire | |
| Breeder | |
| Birthplace |
| May Day (US), 1877 | Wissahickon (US), 1869 | William Welch (US), 1865 | Hambletonian (Rysdyk's) (US), 1849 |
| Colour | Gender | Pedigree | Breeder | ||
|---|---|---|---|---|---|
| 1885 | Lord Byron (US) | bay | horse | General Benton (US), 1868 - May Day (US), 1877 | Leland Stanford |