 John P. Ravilious has proposed that Agatha was daughter of Mieszko II Lambert of Poland by his German wife, making her kinswoman of both Emperors Henry, as well as sister of a Hungarian queen, the wife of Béla I. Ravilious and MichaelAnne Guido subsequently published an article setting forth further evidence concerning the hypothesized Polish parentage of Agatha, including the derivation of the name Agatha (and of her putative sister Gertrude of Poland) from the names of saints associated with the abbey of Nivelles.This argument is further supported by the replacement by Andrew I of Hungary (husband of Anastasia of Kiev) of his brother Bela as his heir apparent with his young son Salomon in 1057.If Agatha had been Andrew's sister-in-law, and aunt of Salomon, this act by King Andrew would have strengthened her bonds and those of her husband Edward to Hungary's future