Old Montagu Mare (牝 Lor. d'Arcy's Old Montagu)
 |-- Sister To Mother Western (牝 Easby Snake)
 |   `-- Blacklegs Mare (牝 Devonshire Blacklegs)
 |       `-- Trajan (牡 1749 鹿毛 Regulus)
 `-- Mother Western (牝 1731 Easby Snake)
     |-- Miss Western (牝 1746 栗毛 Sedbury)
     |   |-- Miss Cranbourne (牝 1753 鹿毛 Godolphin Arabian)
     |   `-- Bajazet Mare (牝 1762 鹿毛 Bajazet)
     |-- Spilletta (牝 1749 鹿毛 Regulus)
     |   |-- Eclipse (牡 1764 鹿毛 Marske)
     |   |-- Proserpine (牝 1766 鹿毛 Marske)
     |   `-- Garrick (牡 1772 栗毛 Marske)
     `-- Rib Mare (牝 1751 Rib)
         |-- Le Sang Mare (牝 芦毛 Le Sang)
         |-- Blank Mare (牝 1760 鹿毛 Blank)
         `-- Le Sang Mare (牝 1774 芦毛 Le Sang)