Richilde, Countess of Hainaut
Richilde, Countess of Mons and Hainaut( – 15 March 1086), was a ruling countess of Hainaut from c. 1050 until 1076, in co-regency with her husband Baldwin VI, Count of Flanders and son Baldwin II, Count of Hainaut.
She was also countess consort of Flanders by marriage to Baldwin VI, Count of Flanders.
She served as regent of Flanders during the minority of her son Arnulf III, Count of Flanders in 1070- 1071.
Princess Joséphine Marie of Belgium
Princess Joséphine Marie of Belgium( 30 November 1870 — 18 January 1871) was the daughter of Prince Philippe, Count of Flanders, and Princess Marie of Hohenzollern- Sigmaringen.
She was the older twin to Princess Henriette of Belgium.
In 1872 Joséphine Marie's mother gave birth to another daughter, who was named Joséphine in her memory.
Leopold I of Belgium
Leopold I (16 December 1790 – 10 December 1865) was a German prince who became the first King of the Belgians following the country's independence in 1830.
He reigned between July 1831 and December 1865.
Born into the ruling family of the small German duchy of Saxe-Coburg-Saalfeld, Leopold took a commission in the Imperial Russian Army and fought against Napoleon after French troops overran Saxe-Coburg during the Napoleonic Wars.
After Napoleon's defeat, Leopold moved to the United Kingdom where he married Princess Charlotte of Wales, who was second in line to the British throne and the only legitimate child of the Prince Regent (the future King George IV).
Charlotte died after only a year of marriage, but Leopold continued to enjoy considerable status in Britain.
After the Greek War of Independence (1821–32), Leopold was offered the crown of Greece but turned it down, believing it to be too precarious.
Instead, Leopold accepted the kingship of the newly established Kingdom of Belgium in 1831.
The Belgian government offered the position to Leopold because of his diplomatic connections with royal houses across Europe, and because as the British-backed candidate, he was not affiliated with other powers, such as France, which were believed to have territorial ambitions in Belgium which might threaten the European balance of power created by the 1815 Congress of Vienna.
Leopold took his oath as King of the Belgians on 21 July 1831, an event commemorated annually as Belgian National Day.
His reign was marked by attempts by the Dutch to recapture Belgium and, later, by internal political division between liberals and Catholics.
As a Protestant, Leopold was considered liberal and encouraged economic modernisation, playing an important role in encouraging the creation of Belgium's first railway in 1835 and subsequent industrialisation.
As a result of the ambiguities in the Belgian Constitution, Leopold was able to slightly expand the monarch's powers during his reign.
He also played an important role in stopping the spread of the Revolutions of 1848 into Belgium.
He died in 1865 and was succeeded by his son, Leopold II.
Princess Joséphine Caroline of Belgium
Princess Joséphine Caroline of Belgium( 18 October 1872 – 6 January 1958) was the youngest daughter of Prince Philippe, Count of Flanders and Princess Marie of Hohenzollern- Sigmaringen.
She was an older sister of Albert I of Belgium.
Baldwin V, Count of Flanders
Baldwin V of Flanders( c. 1012 – 1 September 1067) was Count of Flanders from 1035 until his death.
He was the son of Baldwin IV, Count of Flanders, who died in 1035.
Amélie of Orléans
Amélie of Orléans( 28 September 1865 – 25 October 1951) was the last Queen consort of Portugal.
The wife of Carlos I of Portugal, she was known to her husband's subjects as" Maria Amélia de Orleães".
As the eldest daughter of Prince Philippe, Count of Paris, and his wife, Princess Marie Isabelle d' Orléans, she was a" Princess of Orléans" by birth.
Prince Philippe, Count of Flanders
Prince Philippe of Belgium, Count of Flanders (24 March 1837 – 17 November 1905) was the third born (but second surviving) son of Leopold I, King of the Belgians and his wife Louise d'Orléans (1812–1850).
He was born at the Château de Laeken, near Brussels, Belgium.
He was created Count of Flanders on 14 December 1840, and on his 18th birthday in 1855 he received the Grand Cordon of the Order of Leopold.
He was the heir presumptive to the Belgian throne, from 1869 (upon the death of his nephew) until his own death in 1905.
In 1866, after the abdication of Alexandru Ioan Cuza, Prince of Romania, he refused being named the new Romanian sovereign, and the throne was later accepted by Carol I. Earlier, Philippe had also refused the crown of Greece, which was offered to him in 1862.
Henry of Flanders
Henry( 1176? – 11 June 1216) was the second emperor of the Latin Empire of Constantinople.
He was a younger son of Baldwin V, Count of Hainaut( later Baldwin VIII, count of Flanders), and Margaret I of Flanders, sister of Philip of Alsace, count of Flanders.
Princess Henriette of Belgium
Princess Henriette of Belgium, later Princess Henriette of Orléans, Duchess of Vendôme( 30 November 1870 – 28 March 1948), was the daughter of Prince Philippe, Count of Flanders, and Princess Marie of Hohenzollern- Sigmaringen.
She was the younger twin sister of Princess Joséphine Marie of Belgium, who died at the age of six weeks in 1871.
Prince Baudouin of Belgium
Prince Baudouin of Belgium (3 June 1869 – 23 January 1891), born in Brussels, was the first child and eldest son of Prince Philippe, Count of Flanders, and his wife, Princess Marie of Hohenzollern-Sigmaringen.
Baudouin was the nephew of Leopold II of Belgium.
Upon the death of Leopold, Duke of Brabant, Leopold II's eldest (and only) son, six months before Baudouin's birth, the king was left with only one person in the line of succession – Leopold II's younger brother, Prince Philippe, Count of Flanders.
Baudouin's birth in June 1869 was celebrated throughout the country.
He was second in line to the throne at the time of his birth, after his father.
King Leopold II was to have one more child, another daughter, Clémentine.
Prince Baudouin was thus groomed to eventually succeed his uncle as king.
After Prince Baudouin's death, his younger brother, Albert, eventually became heir presumptive after the death of their father, and later succeeded their uncle Leopold II as Albert I of Belgium.

Question: What is the place of birth of Prince Philippe, Count Of Flanders's father?
Answer: Coburg