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