Background
He was born at Dürckheim, the fourth child and only son of Carl Friedrich Wilhelm, Count of Leiningen-Dagsburg-Hartenburg by his wife Countess Christiane Wilhelmine Luise of Solms-Rödelheim and Assenheim. On 3 July 1779 his father was made a Prince of the Holy Roman Empire, and Emich Carl became Hereditary Prince of Leiningen. On 9 January 1807 he succeeded his father as second Prince of Leiningen.
Career
They had one son together:
Prince Friedrich Karl Heinrich Ludwig of Leiningen (1 March 1793 - 22 February 1800)
She bore him two further children:
Carl Friedrich Wilhelm Emich (12 September 1804 - 13 November 1856). Succeeded his father as third prince. Married on 13 February 1829 Countess Maria Klebelsberg, and had issue.
Princess Anna Feodora Auguste Charlotte Wilhelmine of Leiningen (7 December 1807 - 23 September 1872).
Married in 1828 Ernst I, Prince of Hohenlohe-Langenburg, and had issue. Emich Carl died at Amorbach on the 4 July 1814 and was succeeded by his second surviving son.
His widow was married a second time to Prince Edward Augustus, Duke of Kent and Strathearn, fourth son of King George III of the United Kingdom. By him she had a second daughter, Princess Victoria of Kent, who would later become Queen of the United Kingdom.