 He concluded that of the few contemporaries named Agatha, only Agatha Chryselia, the wife of Samuel of Bulgaria could possibly have been an ancestor of Edward the Exile's spouse.Some of the other names associated with Agatha and used to corroborate theories based in onomastics were present within the Bulgarian ruling family at the time, including Mary and several Davids.Mladjov initially inferred that Agatha was granddaughter of Agatha Cryselia, daughter of Gavril Radomir, Tsar of Bulgaria by his short-lived first marriage to a Hungarian princess thought to have been the daughter of Duke Géza of Hungary.