| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Will Patricia | bay | f | 1984 | Bellypha | Native Loraine | Thoroughbred | USA | |
| Will Somers | d.-bay | c | 1955 | Tudor Minstrel | Queen's Jest | Thoroughbred | Great Britain | |
| Will Take Charge | chestnut | c | 2010 | Unbridled's Song | Take Charge Lady | Thoroughbred | USA | |
| Will's Way | bay | c | 1993 | Easy Goer | Willamae | Thoroughbred | USA | |
| Willa | f | Pergolese | Thoroughbred | |||||
| Willa Joe | bay | f | 1990 | El Gran Senor | Willamae | Thoroughbred | Ireland | |
| Willam's Volos | chestnut | c | 2021 | 643099200011832 | 0678-4 Aldonin | 5437-7 Uelta | Thoroughbred | Mr Kucherov N.I. |
| Willamae | bay | f | 1980 | Tentam | Raclette | Thoroughbred | USA | |
| Willamaze | d.-bay | f | 1999 | Broad Brush | Sweet Willa | Thoroughbred | USA | |
| Willathewest | bay | f | 2005 | Gone West | Willa Joe | Thoroughbred | USA |