Grey Wilkes (牝 Hautboy)
 |-- Snake Mare (牝 Snake)
 |   `-- Grey Robinson (牝 1723 芦毛 Bald Galloway)
 |       |-- Regulus (牡 1739 鹿毛 Godolphin Arabian)
 |       |-- Sister to Regulus (牝 1743 鹿毛 Godolphin Arabian)
 |       `-- Godolphin Arabian Mare (牝 1743 芦毛 Godolphin Arabian)
 `-- Snake Mare (牝 1713 Snake)
     |-- Foxhunter (牡 1722 栗毛 Bald Galloway)
     |-- Shock (牡 1729 鹿毛 Jigg)
     `-- Squirt (牡 1732 栗毛 Bartlet's Childers)