Paul Friedrich ruled as Grand Duke of Mecklenburg-Schwerin from 1837 to 1842.
Portrait of his wife, Princess Alexandrine and children, Friedrich Franz II and Luise, by Friedrich Wilhelm Schadow, c. 1825
Duchess Marie Louise of Mecklenburg-Schwerin was the Duchess of Saxe-Altenburg. She was the daughter of Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin, and Grand Duchess Elena Pavlovna
Marie Louise in 1862
Portrait of Marie Louise by Joseph Karl Stieler, 1851