| Name | Princess Margaret (US) |
| YoB | 1936 |
| Sex | mare |
| Colour | bay |
| Sire | Peter Volo (US), 1911 |
| Dam | Margaret Arion (US), 1923 |
| Damsire | Guy Axworthy (US), 1902 |
| Breeder | Walnut Hall Farm |
| Birthplace |
| Colour | Gender | Pedigree | Breeder | ||
|---|---|---|---|---|---|
| 1949 | Royal Mary (US) | bay | mare | Darnley (US), 1940 - Princess Margaret (US), 1936 | Walnut Hall Farm |