1858 Helena of Mecklenburg-Schwerin from Die Gartenlaube (1858) p. 625
From Wikimedia.
This engraving is probably a portrait from when she died in 1858 based on some earlier portrait. Helene is awash in her lace shawl and a floral headdress that emphasizes width much as the lace headdress in the previous image does. She also appears to be wearing a lace scarf.
Keywords: Helene of Mecklenburg-Schwerin, Mecklenburg family, Winterhalter, Orleans family, Duchess, French, straight coiffure, floral lace headdress, lappets, high neckline, scarf, lace, bows, jacket bodice, collar, long sleeves, engageantes, shawl