Title: Frederick I, Duke of Württemberg
Content:  garters with diamonds and rubies, and two St Georges with diamonds and rubies, and a gold chain or collar, made by the London goldsmiths, John Spilman and William Herrick. In 1599, Frederick I issued an order that a new town should be established at the northern extremity of the Black Forest by the name of Freudenstadt. The aim was for the town to become the new residence of the Duchy of Württemberg as it was closer to Mömpelgard than the Württemberg capital Stuttgart. However, Frederick I died in 1608, aged 50, in Stuttgart, and his plans never came to fruition.
Title: Friedrichstadt (Berlin)
Content:   Friedrichstadt was an independent suburb of Berlin, and is now a historical neighbourhood of the city itself. The neighbourhood is named after the Prussian king Frederick I.
Title: Prince Frederick of Prussia (1794–1863)
Content:  He was recalled to Berlin during the Revolutions of 1848 in the German states. His popularity in Düsseldorf was such that he was appointed the first honorary citizen of the city in 1856. Frederick had separated from his wife the previous year, due to her chronic nervous disease. She lived at Eller near Düsseldorf, where he visited her on their common birthday. Frederick, his wife and younger son are buried in a chapel he had built at Burg Rheinstein. The town of Fredericksburg, Texas, also known as Fritzburg, was named after Frederick by the town's founder baron John O. Meusebach.
Title: Frederick I of Prussia
Content:  Born in Königsberg, he was the third son of Frederick William, Elector of Brandenburg by his father's first marriage to Louise Henriette of Orange-Nassau, eldest daughter of Frederick Henry, Prince of Orange and Amalia of Solms-Braunfels. His maternal cousin was King William III of England. Upon the death of his father on 29 April 1688, Frederick became Elector Frederick III of Brandenburg and Duke of Prussia. Right after ascending the throne Frederick founded a new city southerly adjacent to Dorotheenstadt and named it after himself, the Friedrichstadt.
Title: Frederick V of Denmark
Content:  On 1 August 1771, five years after the king's death, an equestrian statue of Frederick V dressed in the garb of a Roman emperor by the French sculptor Jacques François Joseph Saly was unveiled in Amalienborg Square in Copenhagen. The town of Frederiksværk on the island of Zealand, the town of Frederiksted on the island of St. Croix, U.S. Virgin Islands, as well as the district Frederiksstaden in Copenhagen are named after Frederick V. The city of Serampore in the Indian state of West Bengal was known under the name Frederiksnagore from 1755 to 1845 when it was part of Danish India, and the city of Paamiut in Greenland was formerly known as Frederikshaab, both in his honor. A former naval base in Norway; Fredriksvern is named after him.
Title: Berlin
Content:  formed the Kingdom of Prussia, as Frederick III, Elector of Brandenburg, crowned himself as king Frederick I in Prussia. Berlin became the capital of the new Kingdom, replacing Königsberg. This was a successful attempt to centralise the capital in the very far-flung state, and it was the first time the city began to grow. In 1709, Berlin merged with the four cities of Cölln, Friedrichswerder, Friedrichstadt and Dorotheenstadt under the name Berlin, "Haupt- und Residenzstadt Berlin". In 1740, Frederick II, known as Frederick the Great (1740–1786), came to power. Under the rule of Frederick II, Berlin became a center of the Enlightenment, but also, was briefly occupied during the Seven Years' War by 
Title: Frederick, Colorado
Content:  Initially named McKissick for the mine owner, Frederick was renamed when the daughters of Frederick A. Clark, a land owner, laid out the town site in 1907 and named it for their father. Incorporated in 1907, the Town of Frederick began as a coal mining town attracting immigrants from Italy, France, Greece, Turkey, several Slavic countries and Latin America. The Frederick Coal mine closed in 1928. In 2014 the town 're-branded' by designing a logo that is a stylized gas lamp with a mountain range background, and adopting the tag line "Built on What Matters". Prior to the re-branding the town primarily used the seal as a logo on town vehicles and letter head. The city gained international attention in 2018 when it became the location of the widely publicized Watts family murders.
Title: Friedrichstadt (Berlin)
Content:  shoppers, its western sections remained calm." After the death of prince-elector Frederick William of Brandenburg in 1688, his son, prince-elector Friedrich III, later king Frederick I of Prussia, was allowed to establish a new city on the outskirts of Cölln, one of the precursor cities of modern-day Berlin. In order to assist with the street layout and the placement of buildings and houses, various architects and engineers, including Johann Nering, Johann Behr, and Martin Grünberg were called in. The new city was founded in 1691. Friedrichstadt was the third expansion of the Berlin-Cölln city center, after Dorotheenstadt and Friedrichswerder. Friedrichstadt was built 
Title: History of Berlin
Content: 1709: Berlin counted 55,000 inhabitants, of whom 5,000 served in the Prussian Army. Cölln and Berlin were finally unified under the name of Berlin, including the suburbs of Friedrichswerder, Dorotheenstadt, and Friedrichstadt, with 60,000 inhabitants. Berlin and Cölln are on both sides of the river Spree, in today's Mitte borough. In 1701, Elector Frederick III (1688–1701) crowned himself as Frederick I (1701–1713), King in Prussia. He was mostly interested in decorum: he ordered the building of the castle Charlottenburg in the west of the city. He made Berlin the capital of the new kingdom of Prussia. On 1 January 1710, the cities of Berlin, Cölln, Friedrichswerder, Dorotheenstadt, and Friedrichstadt were united as the “Royal Capital and Residence of Berlin”.
Title: Düsseldorf-Friedrichstadt
Content:  Friedrichstadt is an urban borough of Düsseldorf. It is in the south of the Central District of Düsseldorf, north of Bilk, west of Oberbilk, and east of Unterbilk.  Friedrichstadt was completely planned and constructed in the middle of the 19th century. The construction began in 1854 after it was planned completely in a tesselated paradigm. It was named in honour to King Frederick William IV of Prussia. In the beginning it was a bit swampy, but after a short while it developed well and became a borough mainly for officers and public clerks. Even today in Friedrichstadt many buildings are in the Wilhelminian style. The idea of the Garden City was another concept proved in Friedrichstadt. The garden architect Maximilian Weyhe designed two parks with ponds in Friedrichstadt. In 1880 the Parliament of the Prussian Rhine Province got its seat in the Ständehaus (House of States) in Friedrichstadt. Until the year 1988 the State Parliament of North Rhine-Westphalia was in the Ständehaus. Actually an Arts museum is in that building. This article is based on a translation of an article from the German Wikipedia.

Question: What is Frederick the capital of?
Answer: Tillman County.
Tillman County, Oklahoma.