German nobleman who was an ancestor of various European royals, including Carl XVI Gustaf of Sweden, Felipe VI of Spain, and Constantine II of Greece. After his death, his widow, Princess Victoria of Saxe-Coburg-Saalfeld, married a son of George III of Great Britain and became the mother of Queen Victoria of the United Kingdom.
Emich Carl was married first, on 4 July 1787, to Henriette, youngest daughter of Heinrich XXIV, Count of Reuss-Ebersdorf, by his wife, Countess Karoline Ernestine of Erbach-Schönberg. Henriette died on 3 September 1801. By this marriage, Emich Carl had one son, Prince Friedrich Karl Heinrich Ludwig of Leiningen (1 March 1793 – 22 February 1800).
On 21 December 1803, two years after the death of his first wife, Emich married Princess Victoria of Saxe-Coburg-Saalfeld, fourth daughter of Francis, Duke of Saxe-Coburg-Saalfeld by his wife, Countess Augusta Reuss of Ebersdorf. His second wife was a niece of his late wife. She bore him two further children: Carl Friedrich Wilhelm Emich (12 September 1804 – 13 November 1856) and Princess Anna Feodora Auguste Charlotte Wilhelmine of Leiningen (7 December 1807 – 23 September 1872). Auguste married in 1828, Ernst I, Prince of Hohenlohe-Langenburg, and had issue. She is an ancestor of various European royals, including Carl XVI Gustaf of Sweden, Felipe VI of Spain, and Constantine II of Greece.
Emich Carl died at Amorbach on 4 July 1814 and was succeeded by his only surviving son, Carl Friedrich.

Link to Wikipedia biography