Winthrop (US) ATR-505
| Year of Birth | 1864 |
| Sex | horse |
| Colour | bay |
| Sire | Drew Horse (US), 1842 |
| Dam | Dam of Winthrop (US) |
| Damsire | Eaton Horse (US), 1840 |
| Breeder | E. J. Greene |
| Birthplace |
Pedigree
Foals
| YoB | Name | Colour | Sex | Pedigree | Breeder | Birthplace |
|---|---|---|---|---|---|---|
| 1874 | Molly Drew (US) | chestnut | mare | Winthrop (US) - Fanny Fern (US) | L. E. Yates |