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| Ferdinand | |
|---|---|
| Hereditary Prince of Denmark | |
| Born | (1792-11-22)22 November 1792 Christiansborg Palace,Copenhagen, Denmark |
| Died | 29 June 1863(1863-06-29) (aged 70) Copenhagen, Denmark |
| Burial | |
| Spouse | |
| House | Oldenburg |
| Father | Frederick, Hereditary Prince of Denmark (officially) Frederick von Blücher (rumored) |
| Mother | Sophia Frederica of Mecklenburg-Schwerin |
Frederick Ferdinand, Hereditary Prince of Denmark (Danish:Arveprins Ferdinand) (22 November 1792 – 29 June 1863) was grandson ofKing Frederick V andheir presumptive to the throne from 1848 until his death. Had he lived five months longer, he would have outlived his nephew,King Frederick VII, and becomeKing of Denmark.

Prince Ferdinand was born atChristiansborg Palace inCopenhagen on 22 November 1792 as the youngest child ofFrederick, Hereditary Prince of Denmark and Norway andSophie Frederikke of Mecklenburg, thus being a grandson of late KingFrederick V of Denmark and Norway.
His uncleKing Christian VII being mentally unstable, his father had acted as regent after the fall ofJohann Friedrich Struensee in 1772. But after the coup of 1784, when the king's sonCrown Prince Frederick took power and regency, Hereditary Prince Frederick had been without influence at the court. However, Crown Prince Frederick being without male heirs, Hereditary Prince Frederick and his sons were in the immediate line of succession to the throne.
When Christiansborg Palace was destroyed by fire in 1794, the young Prince and his family moved toAmalienborg Palace where he was brought up, spending the summers atSorgenfri Palace.

Prince Ferdinand married atFrederiksberg Palace on 1 August 1829 hisfirst cousin once removed,Princess Caroline of Denmark (1793–1881). She was the eldest daughter of the above-mentioned sonless Crown Prince Frederick, nowKing Frederick VI of Denmark. When Frederick VI died in 1839, because of theSalic Law Caroline did not succeed to the throne, which was inherited by the closest male relative, Ferdinand's elder brother PrinceChristian Frederick.
The number of male members of the Royal House was so low in those decades that Ferdinand himself was always very close to the succession. At the death of his brother Christian VIII in 1848, the aged Ferdinand becameheir presumptive.
Ferdinand died childless, which was one of the reasons why themain branch of the Danish Royal House soon became extinct, triggering thesecond war of Schleswig.