| Name | Margaret O. (US) |
| YoB | 1900 |
| Sex | mare |
| Colour | |
| Sire | Onward (US), 1875 |
| Dam | Marguerite A. (US), 1893 |
| Damsire | Axtell (US), 1886 |
| Breeder | |
| Birthplace |
| Colour | Gender | Pedigree | Breeder | ||
|---|---|---|---|---|---|
| 1910 | Margaret Prima (US) | mare | Peter the Great (US), 1895 - Margaret O. (US), 1900 |