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 )