Bonny Lass (牝 1723 黒鹿毛 Bay Bolton)
 |-- Partner Mare (牝 1735 鹿毛 Croft's Partner)
 |   |-- Naylor (牝 1748 鹿毛 Cade)
 |   |   |-- Blank Mare (牝 Blank)
 |   |   `-- Centinel (牡 1758 栗毛 Blank)
 |   |-- Spectator (牡 1749 鹿毛 Crab)
 |   |-- Tatler (牡 1754 鹿毛 Blank)
 |   `-- Julia (牝 1756 鹿毛 Blank)
 |       |-- Promise (牝 1768 黒鹿毛 Snap)
 |       `-- Princess (牝 1769 鹿毛 Herod)
 `-- Lonsdale Mare (牝 1736 鹿毛 Lonsdale Bay Arabian)
     |-- Regulus Mare (牝 Regulus)
     |   |-- Blank Mare (牝 1759 栗毛 Blank)
     |   |-- Nettle (牝 1762 芦毛 Bajazet)
     |   `-- Nettle (牝 1763 芦毛 Bajazet)
     |-- Blank Mare (牝 Regulus)
     |   `-- Goldfinder (牡 1764 鹿毛 Snap)
     `-- Bonny Lass (牝 1751 鹿毛 Black Chance)
         |-- Young Bonny Lass (牝 Jolly Roger)
         `-- Janus Mare (牝 1758 Janus)