The Steeltrap Mare ( 牝 1834 栗毛 Steeltrap )
 |-- Marchioness ( 牝 1850 Marquis )
 |   |-- Bylong ( 牡 1863 Sir Hercules )
 |   `-- The Marchioness Filly ( 牝 1869 栗毛 Kingston )
 |   |   |-- Helena ( 牝 1879 黒鹿毛 Yattendon )
 |   |   `-- Young Nina ( 牝 1885 The Drummer )
 |-- Ladybird ( 牝 1850 栗毛 Marquis )
 |   |-- Maid of the Lake ( 牝 1859 鹿毛 Lambuscat )
 |   |   `-- Maiden's Blush ( 牝 1870 Kingston )
 |   `-- Phoebe ( 牝 1863 栗毛 Sir Hercules )
 |   |   `-- Miss Phoebe ( 牝 1872 栗毛 Kingston )
 `-- Traveller ( セ 1858 )
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