Duchess Marie Louise of MecklenburgSchwerin was daughter of Frederick Louis, Hereditary Grand Duke of MecklenburgSchwerin and consort of Georg, Duke of SaxeAltenburg.
Marie Louise was born at Ludwigslust, MecklenburgSchwerin, second child and first daughter of Frederick Louis, Hereditary Grand Duke of MecklenburgSchwerin , and his wife, Grand Duchess Elena Pavlovna of Russia , .
Source: Wikipedia