 Complete the following phrase:  When her husband died, her 14-year-old son Eberhard III was still a minor and his uncle Louis Frederick, Duke of Württemberg-Montbéliard acted as regent. After Frederick Louis died on 26 January 1631, the regency was taken up by Sophie Barbara and Julius Frederick, Duke of Württemberg-Weiltingen, with Sophie Barbara being high regent. She therefore moved back to Stuttgart in 1632 and became politically active. After the 