A significant broodmare in the family, branches 3-a, 3-b and 3-c descend from her, 3-a from the mare herself, 3-b through her daughter Cypher (by Squirrel) and 3-c through her daughter Snapdragon (by Snap)

In addition to her 5 generation progeny detailed below, the best horses to descend from Sister to Miss Belsea include Aladdin (1815 Ascot Gold Cup), Galantine (1831 1000 Guineas) and Pyrrhus the First (1846 Derby)

A great broodmare, grandam of Faith (1781 Oaks); of Assassin (1782 Derby); of Trifle (1785 Oaks); 3rd dam of top class racehorse and outstanding sire Buzzard;

of Maid of the Oaks (1783 Oaks); of Spadille (1787 St Leger); of Young Flora (1788 St Leger); of Champion (1800 Derby, St Leger); of Hephestion (1810 2000 Guineas); 4th dam of Maid of Orleans (1809 Oaks); of Charlotte (1814 1000 Guineas); 5th dam of Ambrosio (1796 St Leger); of Ephemera (1800 Oaks); of Mameluke (1827 Derby); and of great American racehorse and outstanding stallion American Eclipse