 In architecture Theodelinda founded the Basilica of St. John and the Royal Palace of Monza, while some masterpieces in gold were created such as "Agilulf Cross", the "hen with chicks", the "Theodelinda Gospels" and the famous "Iron Crown".After the death of Agilulf in 616, the throne passed to his son Adaloald, a minor.The regency (which continued even after the king passed into majority) was exercised by the Queen Mother, Theodelinda, who gave command of the military to Duke Sundarit.