In early 1578, the regency was taken over by his cousin, George Frederick of Brandenburg-Kulmbach (1539–1603).
After George Frederick's death in 1603, the Polish king Sigismund III Vasa appointed Joachim Frederick as regent in 1605, and permitted his son, John Sigismund, to succeed him in 1611.
George Frederick of Brandenburg-Ansbach (German: Georg Friedrich der Ältere;
George Frederick reigned in his native Ansbach, Franconia and Jägerndorf, Upper Silesia since 1556 and, after the death of his cousin Albert Alcibiades in 1557, also in Kulmbach.
George Frederick rebuilt the palace and fortress of Plassenburg, which had been destroyed in the Second Margrave War (1552–1554).
Tying up administration of the Commonwealth's northern provinces, in February 1578 he acknowledged George Frederick as the ruler of Duchy of Prussia, receiving his feudal tribute.
The orphaned Caroline and William Frederick returned to Ansbach to stay with their elder half-brother, Margrave George Frederick II. George Frederick was a youth with little interest in parenting a girl, and so Caroline soon moved to Lützenburg outside Berlin, where she entered into the care of her new guardians, Frederick, Elector of Brandenburg, and his wife, Sophia Charlotte, who had been a friend of Eleonore Erdmuthe.
The castle had been rebuilt as the seat of a Procurator and a settlement also named Insterburg grew up to serve it. When the Prussian Duke Albert of Brandenburg-Ansbach in 1525 secularized the monastic State of the Teutonic Order, Insterburg became part of the Duchy of Prussia and was granted town privileges on 10 October 1583 by the Prussian regent Margrave George Frederick.
The full version of coat of arms in question has a picture of a Prussian man with a horn and the Latin initials G.F. for the Regent of Prussia George Frederick, margrave of Brandenburg-Ansbach (1543–1603), who gave Insterburg the status of town and with it his family coat of arms.
Jackson was born the son of George Frederick and Mary Elizabeth Jackson at Alcester Lodge, Alcester, Warwickshire, England and educated at Denstone College in Staffordshire and Edinburgh University.
Administration in the duchy declined as Albert Frederick became increasingly feeble-minded, leading Margrave George Frederick of Brandenburg-Ansbach to become Regent of Prussia in 1577.
On the recommendation of George Frederick, Margrave of Brandenburg-Ansbach, he was admitted to the Margrave's Academy in Heilsbronn in 1586, where he studied until 1601.
His successor, George Frederick, requested that the imperial sequestation over the Principality of Kulmbach be reversed and was able to take back the government one month later.
The novel is dedicated "to the memory of REGINALD VINCENT CAMPBELL CORBET who fell, while a boy, in the East and GEORGE FREDERICK FRANCIS CORBET who passed, while a boy, in the West".
Because of the duke's illness, Prussia was governed by Albert's nephew George Frederick of Hohenzollern-Ansbach-Jägersdorf (1577–1603).
Upon George Frederick's death in 1603, the regency of the Prussian duchy passed to Joachim Frederick.
He was elected a fellow of the Royal Society after his return from Brazil on 14 December 1820, and married his first wife Mary Parkes in 1823, with whom he had four sons (William John, George Frederick, Henry Gabriel and Edwin Newcombe) and a daughter (Mary Frederica).
Margrave and regent George Frederick (1577–1603), who enjoyed hunting nearby, began the redevelopment of the area.
In 1871 Carpenter was invited to become tutor to the royal princes George Frederick (later King George V) and his elder brother, Prince Albert Victor, Duke of Clarence, but declined the position.
In 1874, the village celebrated for two days after the horse George Frederick which was stabled in the High Street, won The Derby.