Maria Ivanovna Kochubey, née Princess Baryatinskaya - from top to bottom:
1837 Maria Ivanovna Kochubey, née Princess Baryatinskaya by A. Sotta (Probably Bariatinsky Manor - Ivanovo Rylsky, Kursk oblast, Russia). From the lost gallery’s photostream on flickr; spots and flaws throughout image, but mainly in the background, removed with Photoshop, except for the coiffure that was not touched 1240X1553 @72 973kj.
ca. 1840 Maria Ivanovna Bariatinsky by Christina Robertson (State Pushkin Museum - Moskva, Russia). From liveinternet.ru/users/5031314/post360994839/; flaws removed with Photoshop 990X1304 @72 328kj.
1842 Princess Maria Ivanovna Kotschubei, nee Baryatinskaya by Christina Robertson (Regional Art Museum, Simferopol, Crimea). From meisterdrucke.uk/fine-art-prints/Christina-Robertson 1688X2074 @144 4.1Mp.
1840s Maria Ivanovna Baryatinskaya by ? (location ?). From Wikimedia 918X1137 @72 292kj.
1845 Maria Ivanovna Kochubey (Baryatinskaya) by M.A. Boleslavsky (Samara Regional Art Museum - Samara, Samara Oblast, Russia). From Wikimedia; size doubled 538X808 @72 93kj