Winthrop (US) ATR-505
| Year of Birth | 1864 |
| Sex | horse |
| Colour | bay |
| Sire | Drew Horse (US) |
| Dam | Dam of Winthrop (US) |
| Damsire | Eaton Horse (US) |
| Breeder | E. J. Greene |
| Birthplace |
Pedigree
| Winthrop | Drew Horse (US) | ? | ? |
| ? | |||
| Boston Girl (US) | Sir Henry xx (USA) | ||
| ? | |||
| Dam of Winthrop (US) | Eaton Horse (US) | Avery Horse (US) | |
| Buller's Mare of Anson (US) | |||
| Niles Mare (US) | |||
Foals
| YoB | Name | Colour | Sex | Pedigree | Breeder | Birthplace |
|---|---|---|---|---|---|---|
| 1874 | Molly Drew (US) | chestnut | mare | Winthrop (US) - Fanny Fern (US) | L. E. Yates |