| Christian August II | |||||
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_Photograph.jpg) Photograph of Christian August II, c. 1860 | |||||
| Duke of Schleswig-Holstein-Sonderburg-Augustenburg | |||||
| Reign | 14 June 1814 – 11 March 1869 | ||||
| Predecessor | Frederick Christian II | ||||
| Successor | Frederick VIII | ||||
| Born | 19 July 1798 Copenhagen, Denmark | ||||
| Died | 11 March 1869 (aged 70) Primkenau (now Przemków), Silesia, Prussia | ||||
| Spouse | Countess Louise Sophie Danneskiold-Samsøe | ||||
| Issue | Alexander, Hereditary Prince of Schleswig-Holstein-Sonderburg-Augustenburg Princess Louise Auguste Princess Caroline Amelie Princess Wilhelmine Frederick VIII, Duke of Schleswig-Holstein Prince Christian Princess Henriette | ||||
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| House | Schleswig-Holstein-Sonderburg-Augustenburg | ||||
| Father | Frederick Christian II, Duke of Schleswig-Holstein-Sonderburg-Augustenburg | ||||
| Mother | Princess Louise Auguste of Denmark | ||||
| Religion | Lutheranism | ||||
Christian August II, Duke of Schleswig-Holstein-Sonderburg-Augustenburg (19 July 1798 – 11 March 1869, Christian Carl Frederik August), commonly known as Christian, Duke of Augustenborg, was a Danish/German prince and statesman. During the 1850s and 1860s, he was a claimant to first duke of the whole provinces of Schleswig and Holstein, and a candidate to become king of Denmark following the death of King Frederick VII. He was the father-in-law of Princess Helena (daughter of Queen Victoria) and the paternal grandfather of Augusta Victoria, German Empress and wife of Kaiser Wilhelm II.