| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Willnt | bay | f | 1978 | Nostrum | Chateaurullah | Thoroughbred | USA | |
| Willonyx | br. | c | 1907 | William The Third | Tribonyx | Thoroughbred | Great Britain | |
| Willow Ann | chestnut | f | 1942 | Solario | Court of Appeal | Thoroughbred | Great Britain | |
| Willow Dale | bay | f | 1993 | Danehill | Miss Willow Bend | Thoroughbred | Ireland | |
| Willow Dare | bay | f | 1957 | Thoroughbred | USA | |||
| Willow Hour | bay | c | 1978 | Bold Hour | Cherry Willow | Thoroughbred | USA | |
| Willow Lake | br. | f | 1955 | Windfields | Thoroughbred | Canada | ||
| Willowa | chestnut | f | 1983 | Son Ange | Allie's Serenade | Thoroughbred | USA | |
| Willowfield | bay | f | 1965 | Stratus | Willow Lake | Thoroughbred | Canada | |
| Willrock | bay | c | 2024 | 900255001835599 | 1581-7 Grin Rok | 6475-8 Riviera | Thoroughbred | Mr Ulrikh A. V. |