Catherine I (US)
| Year of Birth | 1909 |
| Sex | mare |
| Colour | ? |
| Sire | Peter the Great (US) |
| Dam | Durnella (US) |
| Damsire | Axtell (US) |
| Breeder | |
| Birthplace |
Pedigree
| Catherine I | Peter the Great (US) | Pilot Medium (US) | Happy Medium (US) |
| Tackey (US) | |||
| Santos (US) | Grand Sentinel (US) | ||
| Shadow (ex Lady Duncan) (US) | |||
| Durnella (US) | Axtell (US) | William L. (US) | |
| Lou (US) | |||
Foals
| YoB | Name | Colour | Sex | Pedigree | Breeder | Birthplace |
|---|---|---|---|---|---|---|
| 1918 | Sakura (US) | bay | mare | Atlantic Express (US) - Catherine I (US) | Hillanddale Farm |