Title: Frederick I of Württemberg
Content:   Born in Treptow an der Rega, today Trzebiatów, Poland, Frederick was the eldest son of Frederick II Eugene, Duke of Württemberg, and Sophia Dorothea of Brandenburg-Schwedt. Frederick's father was the third son of Charles Alexander, Duke of Württemberg, and Frederick was thus the nephew of the long-reigning duke Charles Eugene (Karl Eugen). Since neither Duke Charles Eugene nor his next brother, Louis Eugene (Ludwig Eugen), had any sons, it was expected that Frederick's father (also named Frederick) would eventually succeed to the Duchy, and would be succeeded in turn by Frederick. That eventuality was however many years in the future, and the birth of a legitimate son to either of his uncles would 
Title: Frederick (horse)
Content: Frederick's pedigree contains a degree of inbreeding. His paternal grandam Grey Skim and his maternal great-grandam Chestnut Skim were sisters, both being daughters of Woodpecker and Milsinstown's Herod mare. 
Title: Prince Frederick of Württemberg
Content:  Prince Frederick Charles Augustus of Württemberg (Friedrich Karl August Prinz von Württemberg) (21 February 1808 – 9 May 1870) was a General in the Army of Württemberg and the father of William II of Württemberg. Frederick was a member of the Royal Family of Württemberg and a Prince of Württemberg.
Title: Frederick of Antioch
Content:  Frederick was the illegitimate son of the Emperor Frederick II and a certain Matilda (Maria) of Antioch, daughter of Robert of Antioch. Contemporary anti-imperial propaganda alleged that Frederick was the product of the emperor's liaison with a Muslim woman in Palestine, but it is almost certain that the child was born in southern Italy, where he spent his youth. The claim that he was a son of Plaisance of Antioch, daughter of the reigning Prince Bohemond V, is unfounded, as is the later claim that his mother's name was Beatrice (Beatrix). Like most of his father's illegitimate children, Frederick was probably born during the period when his father was unmarried 
Title: Frederick of Pettorano
Content:  Frederick of Pettorano (c. 1212/3 – after 1240) was the eldest illegitimate son of Frederick II, king of Sicily and Germany. He was born on Sicily to an Italo-Norman noblewoman after his father's first marriage to Constance of Aragon. This mistress's name is unknown, but she came from a family of Norman counts on Sicily and had a relationship with the teenage Frederick between 1211 and 1212. Their relationship ended when King Frederick went to Germany and in 1213 took up with another woman, a certain Adelaide. Besides Frederick of Pettorano, Frederick II probably named two other sons after himself: another illegitimate 
Title: Frederick V of Denmark
Content:  Frederick was born on 31 March 1723 at Copenhagen Castle. He was the grandson of King Frederick IV of Denmark and the son of Crown Prince Christian and Sophie Magdalene of Brandenburg-Kulmbach. On 12 October 1730, King Frederick IV died and Frederick's father ascended the throne as King Christian VI. Frederick himself became Crown Prince. Christian VI and Sophie Magdalene were deeply devoted to Pietism, and Frederick was given a strictly religious upbringing. Although not unfamiliar with religious sentiments, Frederick grew into a hedonist who enjoyed the pleasures of life such as wine and women. His mother ironically referred to him as "Der Dänische Prinz" (literally The Danish Prince in German) because he occasionally spoke Danish.
Title: Lord Frederick Cambridge
Content:  Frederick was born on 24 September 1907 in Vienna, Austria, where his father was the British military attaché. At the time of his birth, his father was styled Prince Adolphus, Duke of Teck, the eldest son of Francis, Duke of Teck and Princess Mary Adelaide of Cambridge (a granddaughter of King George III). His mother was The Duchess of Teck (née Lady Margaret Evelyn Grosvenor), daughter of 3rd Marquess of Westminster (later 1st Duke of Westminster). He was styled His Serene Highness Prince Frederick of Teck from his birth, and was educated at Ludgrove School.
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 II, Landgrave of Hesse-Kassel
Content:  Frederick was born at Kassel in Hesse, the son of William VIII, Landgrave of Hesse-Kassel and his wife Dorothea Wilhelmine of Saxe-Zeitz. His paternal grandfather was Charles I, Landgrave of Hesse-Kassel, and his paternal uncle was Frederick I of Sweden. His education was initially entrusted to Colonel August Moritz von Donop and then from 1726 to 1733 to the Swiss theologian and philosopher, Jean-Pierre de Crousaz.
Title: Friedrich Wilhelm Quirin von Forcade de Biaix
Content:  King Frederick the Great by the Duke of Holstein and Governor of Berlin Frederick Ernest of Brandenburg-Kulmbach, Messeigneurs Prince Henry of Prussia and Prince Augustus Ferdinand of Prussia, the King's brothers, the Reigning Prince Leopold II, Prince of Anhalt-Dessau, the General Field Marshal Count Kurt Christoph von Schwerin, Infantry Major General Baron Heinrich August de la Motte Fouqué, and Burgrave and Count Christoph II., von Dohna-Schlodien, collectively his Godfathers. The Godmothers were Princess Leopoldine Marie of Anhalt-Dessau, wife of Frederick Henry, Margrave of Brandenburg-Schwedt, Marie Johanna von Riffer, aka the Countess von Schmettau, wife of General Field Marshal Samuel von 

Question: Who is the father of Frederick?
Answer: Frederick V of Denmark.
kung av Danmark-Norge Fredrik V.
King of Denmark Frederick V.
King of Denmark Friderik V.
re di Danimarca e di Norvegia Frederik V.
Frederick V.