Frederick, Duke of Saxe-Altenburg
Frederick, Duke of Saxe- Hildburghausen( 29 April 1763 in Hildburghausen – 29 September 1834 in Jagdhaus Hummelshain, Altenburg), was duke of Saxe- Hildburghausen( 1780 – 1826) and duke of Saxe- Altenburg( 1826–1834).
Princess Louise of Denmark (1726–1756)
Louise of Denmark and Norway( 19 October 1726 – 8 August 1756) was a Danish and Norwegian princess, the daughter of King Christian VI of Denmark and his wife Sophie Magdalene of Brandenburg- Kulmbach.
Following her marriage to Ernest Frederick III, Duke of Saxe- Hildburghausen, she became Duchess of Saxe- Hildburghausen.
Ernest Frederick, Duke of Saxe-Coburg-Saalfeld
Ernest Frederick, Duke of Saxe- Coburg- Saalfeld( 8 March 1724 in Saalfeld – 8 September 1800 in Coburg), was a Duke of Saxe- Coburg- Saalfeld.
Countess Sophie Henriette of Waldeck
Sophia Henriette of Waldeck (3 August 1662, Arolsen – 15 October 1702, Erbach) was a Princess of Waldeck by birth and by marriage Duchess of Saxe-Hildburghausen,
Duchess Charlotte Georgine of Mecklenburg-Strelitz
Duchess Charlotte Georgine Luise Friederike of Mecklenburg- Strelitz( 17 November 1769 – 14 May 1818) was a member of the House of Mecklenburg- Strelitz and a Duchess of Mecklenburg- Strelitz by birth and a Duchess of Saxe- Hildburghausen through her marriage to Frederick, Duke of Saxe- Hildburghausen( later Duke of Saxe- Altenburg).
Ernest Frederick II, Duke of Saxe-Hildburghausen
Ernst Frederick II, Duke of Saxe- Hildburghausen( 17 December 1707 in Hildburghausen – 13 August 1745 in Hildburghausen), was a duke of Saxe- Hildburghausen.
Ernest Frederick III, Duke of Saxe-Hildburghausen
Ernst Frederick III Karl, Duke of Saxe-Hildburghausen (10 June 1727 in Königsberg in Bayern – 23 September 1780 in Seidingstadt), was a duke of Saxe-Hildburghausen.
Ernest Frederick I, Duke of Saxe-Hildburghausen
Ernest Frederick I, Duke of Saxe-Hildburghausen (21 August 1681 in Gotha – 9 March 1724 in Hildburghausen), was a duke of Saxe-Hildburghausen.
He was the eldest son of Ernest, Duke of Saxe-Hildburghausen and Countess Sophie Henriette of Waldeck.
During his youth he served on the Netherlands in the imperial military army, during which he was wounded in the Spanish Succession War at Höchstädt; in 1715 he left the Army after the death of his father, and assumed the government of the duchy of Saxe-Hildburghausen.
He wanted, like many German princes, to repeat the splendor of the court of the King Louis XIV of France in his own duchy; but this was the cause of his financial ruin.
Constantly in need of money, he levied taxes and sold towns.
Among them was the county of Cuylenburg, the dowry of his wife.
The county was sold in 1720 to the General States, not for the repayment of the debts but to build in his palace a garden connected with a channel.
Likewise, in 1723 the office was finally sold to the duchy of Saxe-Meiningen.
But the sale, without the assent of his wife was illegal, and this led to a war with Saxe-Meiningen.
The county was occupied with troops of both duchies and at the end of the war all of the county was devastated and ruined.
Because of his intolerable fiscal charges, in 1717 an open revolt developed in the duchy.
Prince Eugene of Saxe-Hildburghausen
Frederick William Eugene of Saxe- Hildburghausen( born: 8 October 1730 in Hildburghausen; died: 4 December 1795 in Öhringen) was a Prince of Saxe- Hildburghausen.
Amalie of Saxe-Hildburghausen
Sophie Amalie Caroline of Saxe- Hildburghausen( born: 21 July 1732 in Hildburghausen; died: 19 June 1799 in Öhringen), was a princess of Saxe- Hildburghausen and by marriage Princess of Hohenlohe- Neuenstein- Oehringen.

Question: What is the place of birth of Ernest Frederick I, Duke Of Saxe-Hildburghausen's mother?
Answer: Arolsen