Taproot Mare Family 5-a
There are mtDNA identified errors in Family 5 which show that the family actually descends from three separate founder mares - see The Massey Mare entry.
Grandam of Grey Skim (taproot mare Family 5-b) and 3rd dam of Castanea (taproot mare Family 5-d) and Belvoirina (taproot mare Family 5-e). \In addition to her descendants via the above horses and her five generation progeny below, the best horses which descend from Young Hag include Jack Spigot (1821 St Leger), Deception (1839 Oaks), The Merry Monarch (1845 Derby), Finlande (1861 Prix de Diane), Saint Cyr (1875 Poule d'Essai des Poulains), Fontainebleau (1877 Poule d'Essai des Poulains),