Caroline of Ansbach his father's political beliefs, and complained of his lack of influence in government. The Regency Act 1728 made Caroline rather than Frederick regent when her husband was in Hanover for five months from May 1729. During her regency, a diplomatic incident with Portugal (where a British ship had been seized on the Tagus) was defused, and the negotiation of the Treaty of Seville between Britain and Spain was concluded. From May 1732, she was regent for four months while George II was again away in Hanover. An investigation into the penal system uncovered widespread abuses, including cruel treatment and conspiracy
Princess Frederica Caroline of Saxe-Coburg-Saalfeld her husband found her ugly, ignorant and boring. The marriage remained childless, he separated from his wife, who by that time lived at Schwaningen Castle in Unterschwaningen, and began to live with his mistress Elizabeth Craven. Frederica Caroline's brother, Prince Josias of Saxe-Coburg-Saalfeld, owed his sister admission to the regiment as captain, this starting point of his brilliant career military. After Frederica Caroline's death, her husband abdicated as Margrave and sold the Margravate to Prussia, he left the country and married his English mistress that year. Frederica Caroline is buried in the Gumbertuskirche in Ansbach. Princess Frederica Caroline of Saxe-Coburg-Saalfeld