Apollonia (牝 1826 栗毛 Whisker)
 |-- Bay Middleton Mare (牝 1839 鹿毛 Bay Middleton)
 |   `-- Princess Royal (牝 1855 鹿毛 Slane)
 |       `-- Crown Prince (牡 1863 鹿毛 Newminster)
 |-- Zeila (牝 1840 栗毛 Emilius)
 |   |-- Buckthorn (牡 1849 鹿毛 Venison)
 |   `-- Austrey (牝 1851 栗毛 Harkaway)
 |       `-- Lady Chester (牝 1870 栗毛 Stockwell)
 `-- Eclogue (牝 1841 青毛 Emilius)
     |-- Idyl (牝 1850 鹿毛 Ithuriel)
     |   `-- Ethel (牝 1859 鹿毛 Ethelbert)
     `-- Prologue (牝 1857 鹿毛 Stockwell)
         `-- Progress (牝 1865 鹿毛 Thormanby)