Francis of Denmark
Francis of Denmark( 15 July 1497 – 1 April 1511), was a prince of Denmark, Norway and Sweden, the youngest son of King John of Denmark and Christina of Saxony.
Princess Thyra of Denmark
Princess Thyra of Denmark,,( 29 September 1853 – 26 February 1933, in Gmunden) was the youngest daughter and fifth child of Christian IX of Denmark and Louise of Hesse- Kassel.
In 1878, she married Ernest Augustus, the exiled heir to the Kingdom of Hanover.
As the Kingdom of Hanover had been annexed by Prussia in 1866, she spent most of her life in exile with her husband in Austria.
Thyra was the younger sister of Frederik VIII of Denmark, Queen Alexandra of the United Kingdom, George I of Greece, Empress Maria Feodorovna of Russia and an elder sister of Prince Valdemar of Denmark.
Mary, Crown Princess of Denmark
Mary, Crown Princess of Denmark, Countess of Monpezat,( Mary Elizabeth;" née" Donaldson; born 5 February 1972) is the wife of Frederik, Crown Prince of Denmark.
Frederik is the heir apparent to the throne, which means that should Frederik succeed, she will automatically become Queen of Denmark.
The couple met at the Slip Inn, a pub in Sydney when the prince was visiting Australia during the 2000 Summer Olympics.
Their official engagement in 2003 and their marriage the following year was the subject of extensive attention from Australian and European news media, which portrayed the marriage as a modern" fairytale" romance between a prince and a commoner.
Xiao Daqi
Xiao Daqi (蕭大器) (524–551), courtesy name Renzong (仁宗), formally Crown Prince Ai (哀太子, literally "the lamentable crown prince"), was a crown prince of the Chinese dynasty Liang Dynasty.
He was the oldest son of Emperor Jianwen (Xiao Gang).
Henrik, Prince Consort of Denmark
Prince Henrik of Denmark (born Henri Marie Jean André de Laborde de Monpezat; 11 June 1934 – 13 February 2018) was the husband of Queen Margrethe II of Denmark.
Henrik was born in the French commune of Talence near Bordeaux to an old French family, the Laborde de Monpezats.
He spent his early years in Tonkin in French Indochina (now part of Vietnam), where his family had lived for many years.
The family spent the Second World War at the family home in Cahors, France.
They returned to French Indochina after the war.
However, they were forced to flee following the defeat of the French in the First Indochina War.
After completing his education in France and Vietnam, Henrik served in the French Army during the Algerian War.
Prior to his marriage to Margrethe, he worked in the diplomatic service.
He married Margrethe at the Church of Holmen on 10 June 1967 and became her prince consort when she succeeded her father, King Frederick IX, as monarch of Denmark on 14 January 1972.
He had two sons, Crown Prince Frederik (born 1968) and Prince Joachim (born 1969), and eight grandchildren.
Throughout his time as Prince consort, Henrik voiced his displeasure with the fact that he never received the title of king.
A keen winemaker, Henrik produced his own wine at his estate in France.
He also published many works of poetry.
He was the first male consort to a Danish monarch.
Henrik retired from his royal duties on 1 January 2016, at the age of 81.
He died in Fredensborg Palace on 13 February 2018, after a short illness.
Sima Yu
Sima Yu (司馬遹) (278–300), courtesy name Xizu (熙祖),
formally Crown Prince Minhuai (愍懷太子) was a Chinese crown prince during the Jin Dynasty (265-420).
Sima Yu's father Sima Zhong was developmentally disabled, and before he, then crown prince, was to marry his wife Jia Nanfeng, his father Emperor Wu gave him one of his own concubines, Consort Xie Jiu (謝玖), so that Consort Xie could teach him how to have sexual relations.
While Crown Princess Jia bore the crown prince four daughters, Sima Yu was his only son.
When Sima Yu was four years old, there was a fire in the palace, and Emperor Wu walked up a tower to observe it.
Sima Yu pulled him aside and said, "At night, when something unusual like this happens, we should take precautions.
The light of the fire should not shine on the emperor."
Emperor Wu was surprised by this perceptive observation by a child, and praised the young prince as very much like his own grandfather Sima Yi.
This was part of the reason why Emperor Wu let Crown Prince Zhong remain his heir.
In 289, he created Prince Yu the Prince of Guangling.
After Emperor Wu died in 290, Crown Prince Zhong ascended the throne as Emperor Hui, and Prince Yu was created crown prince.
As Crown Prince Yu grew in age, however, he lost some of the good reputation that he had as a child, as he disliked studying and spent much time on building projects and games.
Empress Jia, who had constantly been jealous of Crown Prince Yu and Consort Xie, did not discourage this behavior, but in fact encouraged it to further damage Crown Prince Yu's reputation.
When Crown Prince Yu's staff would try to correct his ways, he would not listen to them.
He also would not listen to them with regard to their advice to maintain strong relations with Empress Jia's family members.
Empress Jia's mother Guo Huai (郭槐) had constantly advised Empress Jia to treat Crown Prince Yu
well, as her own son, and she advocated marrying a daughter of Empress Jia's sister Jia Wu (賈午) to Crown Prince Yu.
However, Empress Jia and Jia Wu opposed this, and instead married a daughter of the official Wang Yan (王衍) to Crown Prince Yu.
(Wang had two daughters, but Empress Jia had Crown Prince Yu marry the less beautiful one and had her nephew Jia Mi marry the more beautiful one.)
After Lady Guo's death, the relationship between Empress Jia and Crown Prince Yu quickly deteriorated, as Jia Wu and another associate of Empress Jia, Emperor Wu's concubine Consort Zhao Can (趙粲), provoked difficulties between them.
Further, Crown Prince Yu and Jia Mi never liked each other, and Jia Mi, as a result, also advised Empress Jia to depose Crown Prince Yu.
In 299, Empress Jia agreed and took action.
When Crown Prince Yu was in the palace to make an official petition to have his ill son Sima Bin (司馬彬) created a prince, Empress Jia forced him to drink a large amount of wine and, once he was drunk, had him write out a statement in which he declared intention to murder the emperor and the empress and to take over as emperor.
Empress Jia presented the writing to the officials and initially wanted Crown Prince Yu executed—but after some resistance, she only had him deposed and reduced to status of a commoner.
Crown Prince Yu's mother Consort Xie was executed, as was his favorite concubine Consort Jiang Jun (蔣俊, Sima Bin's mother).
Wang Yan divorced his daughter from the crown prince, who wrote an extant, lengthy letter to her explaining the incident through which Empress Jia framed him.
In 300, under the advice of a prince she favored -- Sima Lun the Prince of Zhao, Emperor Wu's granduncle—Empress Jia decided to eliminate Crown Prince Yu as a threat.
She sent assassins and had Crown Prince Yu assassinated.
He was buried with honors due a prince—under the title of Prince of Guanling.
Sima Lun's intent was, however, to use this assassination as excuse to overthrow Empress Jia, and he did so later that year.
He had Crown Prince Yu reburied with the honors due a crown prince and had him given the posthumous name Minhuai.
He also welcomed Crown Princess Wang back to the palace, along with Crown Prince Yu's surviving sons Sima Zang (司馬臧) (whom he had created crown prince) and Sima Shang (司馬尚).
However, when Sima Lun then usurped the throne briefly in 301, Crown Prince Zang was killed.
After Emperor Hui's restoration later that year, Sima Shang was created crown prince, but died in 302, extinguishing Crown Prince Yu's line.
Frederik, Crown Prince of Denmark
Frederik, Crown Prince of Denmark, Count of Monpezat, (Frederik André Henrik Christian; born 26 May 1968) is the heir apparent to the throne of Denmark.
Frederik is the elder son of Queen Margrethe II and the late Henrik, Prince Consort.
Princess Caroline-Mathilde of Denmark
Princess Caroline- Mathilde of Denmark( 27 April 1912 – 12 December 1995) was a daughter of Prince Harald of Denmark and granddaughter of King Frederick VIII of Denmark.
As the wife of Knud, Hereditary Prince of Denmark, she became Hereditary Princess of Denmark.
John Dalgleish Donaldson
John Dalgleish Donaldson( born 5 September 1941) is a Scottish- Australian professor and the father of Mary, Crown Princess of Denmark, the wife of the heir apparent to the throne of Denmark, Frederik, Crown Prince of Denmark.
Wilhelm, German Crown Prince
Wilhelm, German Crown Prince (6 May 1882 – 20 July 1951) was the eldest child and heir of the last German Emperor, Wilhelm II, and the last Crown Prince of the German Empire and the Kingdom of Prussia.
After the death of his grandfather Emperor Frederick III, Wilhelm became crown prince at the age of six, retaining that title for more than 30 years until the fall of the empire on 9 November 1918.
During World War I, he commanded the 5th Army from 1914 to 1916 and was commander of the Army Group German Crown Prince for the remainder of the war.
Crown Prince Wilhelm became head of the House of Hohenzollern on 4 June 1941 following the death of his father and held the position until his own death on 20 July 1951.

Question: Where was the place of death of Frederik, Crown Prince Of Denmark's father?
Answer: Fredensborg Palace