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
Charles Alexander, Margrave of Brandenburg-Ansbach second cousin, as King George III, when Charles was 24). After the sudden death of his elder brother Charles Frederick August on 9 May 1737, "Alexander", as he later called himself, became Crown Prince of the principality. From 1748 to 1759, he studied at Utrecht. As the young "Count of Sayn" (the county of Sayn-Altenkirchen in the Westerwald having been absorbed into the Principality of Ansbach in 1741) he travelled to Turin and Savoy. On 22 November 1754, in Coburg, Charles Alexander married Princess Frederica Caroline of Saxe-Coburg-Saalfeld (1735–1791), daughter of Franz Josias, Duke of Saxe-Coburg-Saalfeld, and Anne Sophia, Princess