Frederick Francis married for a second time in Darmstadt to Princess Anna of Hesse and by Rhine (25 May 1843 – 16 April 1865) on 4 July 1864. They had one daughter: Duchess Anne of Mecklenburg-Schwerin (7 April 1865 – 8 February 1882) died at the age of sixteen. His third wife was Princess Marie of Schwarzburg-Rudolstadt on 4 July
Saxe-Coburg-Saalfeld (German: Sachsen-Coburg-Saalfeld) was one of the Saxon Duchies held by the Ernestine line of the Wettin Dynasty. Established in 1699, the Saxe-Coburg-Saalfield line lasted until the reshuffle of the Ernestine territories that occurred following the extinction of the Saxe-Gotha line in 1825, in which the Saxe-Coburg-Saalfeld line received Gotha, but lost Saalfeld to Saxe ...
Auguste (1752–1805), Prinzessin von Sachsen-Gotha-Altenburg, ⚭ 1780 Friedrich Karl (1736–1793), Fürst von Schwarzburg-Rudolstadt (vgl. Stammliste des Hauses Schwarzburg) Luise (1756–1808), Prinzessin von Sachsen-Gotha-Altenburg, ⚭ 1775 Friedrich Franz I. (1756–1837), Großherzog von Mecklenburg-Schwerin (vgl.
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