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
Frederick I, Margrave of Brandenburg-Ansbach denied entry to Plassenburg Castle. The dispute was finally cleared when an agreement was reached in 1522, in which the demands of the younger sons of Frederick were met. On 14 February 1479, at Frankfurt (Oder), Frederick I was married to Princess Sophia of Poland (6 April 1464 – 5 October 1512), daughter of King Casimir IV of Poland by his wife Elisabeth of Austria, and sister of King Sigismund I of Poland. They had seventeen children: Frederick I, Margrave of Brandenburg-Ansbach Frederick I of Ansbach and Bayreuth (also known as Frederick V; or ; 8 May 1460 – 4