Portraits of Eleonora Gonzaga de Mantua as a little girl. Living from 1598 to 1655, she grew up, got married and ended up Holy Roman Empress in Vienna.

Portrait of Eleonora of Mantua as a Child. 1605.
Portrait of Eleonora of Mantua as a Child. 1605. Oil on canvas. Hans Frans Pourbus the younger, artist (1569–1622). Collection of the Palazzo Pitti, Florence. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Eleonora_Gonzaga_by_Frans_Pourbus_the_Younger_(Galeria_Palatina).jpg
Portrait of Eleonore von Gonzaga. 1600-1601. Oil on canvas.
Portrait of Eleonore von Gonzaga. 1600-1601. Oil on canvas. Probably painted by Peter Paul Rubens. Collection of the Kunsthistorisches Museum, Vienna. In the public domain in the United States because the artist died over 70 years ago. via https://en.wikipedia.org/wiki/Eleonora_Gonzaga_(1598%E2%80%931655)#/media/File:Eleonora_Gonzaga_001.jpg

Borbón ladies of Spain with interesting things in their hair. One twice. All painted by Francisco Goya who has ended up far more famous than the ladies he painted.

Portrait of María Luisa de Borbón y Vallabriga. 1801. Oil on canvas.
Portrait of María Luisa de Borbón y Vallabriga. 1801. Oil on canvas. Francisco Goya, artist (1746-1828). Collection of the Uffizi Gallery, Florence. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Retrato_de_Mar%C3%ADa_Luisa_de_Borb%C3%B3n_y_Vallabriga_por_Francisco_Goya.jpg
María Teresa Borbón y Vallabriga, Princesa de la Paz. Condesa de Chinchón. Lived from 1780 to 1828.
María Teresa Borbón y Vallabriga, Princesa de la Paz. Condesa de Chinchón. 1808. Oil on canvas. Francisco Goya, artist (1746-1828). Image ® Real Academia de la Historia 2018. Fair use license. via https://enacademic.com/dic.nsf/enwiki/973696
María Teresa de Borbón y Vallabriga, later Condesa de Chinchón. 1783.
María Teresa de Borbón y Vallabriga, later Condesa de Chinchón. 1783. Oil on canvas. Francisco Goya, artist (1746-1828). Image © 2019 National Gallery of Art Washington DC. Fair use license. via https://www.nga.gov/collection/art-object-page.52267.html

Portraits of children from a bit back. French. Jean-Baptiste Isabey, artist. Living from 1767 to 1855 he also did portraits of Marie Antoinette, Napoleon, and Josephine.

Portrait of Eustachine Jeanne Dosmond
Portrait of Eustachine Jeanne Dosmond. 1828. In the public domain due to age. via https://pixels.com/featured/portrait-of-eustachine-jeanne-dosmond-jean-baptiste-isabey.html
Portrait of a young boy. 1835.
Portrait of a young boy. 1835. Watercolor with gouache over a black pencil line. Image © Expertissim. Fair use license. via https://en.expertissim.com/jean-baptiste-isabey-1767-1855-portrait-young-boy-12151557
Portrait of Countess Rosa Festetics. 1835.
Portrait of Countess Rosa Festetics. 1835. Watercolor over pencil with white highlights on a chamois colored card. Image © Lempertz Auctions. Fair use license. via https://www.lempertz.com/fr/catalogue/lot/1132-2/1510-jean-baptiste-isabey.html

Ladies in black holding interesting things. French. Alfred Agache, artist. Living from 1843 to 1915, he also painted allegorical scenes, but I like these best.

"Enigma." 1888.
“Enigma.” 1888. Oil on canvas. Image © Musée des Beaux-Arts, Rouen. Fair use license. via https://mbarouen.fr/en/oeuvres/enigma
"Jeune femme assise tenant des fleurs dans les bras." 1889.
“Jeune femme assise tenant des fleurs dans les bras.” 1889. Painting. Collection of the Palais des Beaux-Arts de Lille, Lille. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Lille_PdBA_agache_jeune_femme_fleurs.JPG
"The Sword." 1896.
“The Sword.” 1896. Collection of the Art Gallery of Ontario, Toronto. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:1896_Alfred-Pierre_Agache_-_The_Sword.jpg
"Vanite." 1885.
“Vanite.” 1885. Oil on canvas. Collection of the Palais des Beaux-Arts de Lille, Lille. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Lille_PdBA_agache_vanite.jpg

Imperial Romanov ladies from an English point of view. George Dawe, artist. Living from 1781 to 1829 he spent the last ten years of his life painting in Saint Petersburg.

Tsarina Alexandra Feodorovna, wife of Tsar Nicholas I. 1820's.
Tsarina Alexandra Feodorovna, wife of Tsar Nicholas I. 1820’s. Workshop of George Dawe. In the public domain because the artist died over 70 years ago. via https://commons.wikimedia.org/wiki/File:Alexandra_Feodorovna_-_workshop_of_G.Dawe_(1820s,_GIM).jpg
Tsaritsa Marie Feodorovna, widow of Paul I. 1825.
Tsaritsa Marie Feodorovna, widow of Paul I. 1825. Collection of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 70 years. via http://www.gogmsite.net/russian1715-1789/subalbum-tsaritsa-maria-feo/widow-maria-feodorovna-by.html
Grand Duchess Maria Pavlovna of Russia. 1822.
Grand Duchess Maria Pavlovna of Russia. 1822. Collection of the Hermitage Museum. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Maria_Pavlovna_of_Russia_by_G.Dawe_(1822,_Hermitage).jpg

Portraits of people mostly in black but with children trying to have fun around the edges by portraitists of the Dutch Golden Age. Mid 16th century.

1640-hendrick-cornelisz-van-vliet-1611-1675-michiel-van-der-dussen-and-his-family_orig
“Portrait of Michiel van der Dussen, his Wife, Wilhelmina van Setten and their Children.” 1640. Dutch. Hendrick Corneliszoon van Vliet, artist (1611/12-1675). Collection of the Collection Stedelijk Museum Het Prinsenhof, Delft. In the public domain. via http://www.wikiwand.com/en/Hendrick_Cornelisz._van_Vliet
"Portrait of Jan Jacobsz Hinlopen and his Family." ca. 1662-63.
“Portrait of Jan Jacobsz Hinlopen and his Family.” ca. 1662-63. Gabriël Metsu, painter (1629-1667). Collection of the Staatliche Museen, Berlin. In the public domain. via http://arthistorynewsreport.blogspot.com/2014/09/gabriel-metsu-rediscovered-master-of.html
"Familienporträt des Hendrik van den Broucke" (detail). 1564.
“Familienporträt des Hendrik van den Broucke” (detail). 1564. Cornelis de Zeeuw, painter. In the public domain. via https://www.repro-tableaux.com/a/zeeuw.html?sfl=1&INCLUDE=LIST
"Family Portrait of Pierre de Moucheron, Merchant in Middelburg and Antwerp, his Wife Isabeau de Gerbier, their eighteen Children, their Son-in-Law Allard de la Dale and first Grandchild." 1563.
“Family Portrait of Pierre de Moucheron, Merchant in Middelburg and Antwerp, his Wife Isabeau de Gerbier, their eighteen Children, their Son-in-Law Allard de la Dale and first Grandchild.” 1563. Artist not known. Collection of the Rijksmuseum, Amsterdam. In the public domain. via

Portraits by Élisabeth Vigée Le Brun, none of them of Marie Antoinette. Living from 1755 to 1842 she evaded the guillotine, painting ladies in Italy and Russia instead. A few children tossed in, too.

Alexandra and Elena, Daughters of Paul I of Russia. 1796.
Alexandra and Elena, Daughters of Paul I of Russia. 1796. Collection of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Alexandra_and_Elena_Pavlovna_of_Russia_by_E.Vigee-Lebrun_(1796,_Hermitage).jpg
Portrait assumed to be Ekaterina Vassilievna Skavronskaia, comtesse Litta. 1790.
Portrait assumed to be Ekaterina Vassilievna Skavronskaia, comtesse Litta. 1790. Image © Christies, Inc. Fair use license. via https://www.christies.com/lotfinder/Lot/marie-louise-elisabeth-vigee-lebrun-paris-1755-1842-portrait-presume-dekaterina-5945037-details.aspx?lid=4&sc_lang=zh-cn
Caroline Murat, Queen of Naples, with her daughter, Letizia. 1807.
Caroline Murat, Queen of Naples, with her daughter, Letizia. 1807. In the public domain in the United States because the artist has been dead over 70 years. via http://www.orologidalmondo.it/storia-di-breguet-2a-parte/
Portrait-Of-Prince-Henry-Lubomirski-1789
Prince Henry Lubomirski as the Genius of Fame. 1789. In the public domain because the artist has been dead over 70 years. via http://postergrad.ru/kartiny/62079/ehlizabet/portrait_of_prince_henry_lubomirski_as_the_genius_of_fame.html
Portrait of Giuseppina Grassini in the role of "Zaïra". 1804.
Portrait of Giuseppina Grassini in the role of “Zaïra”. 1804. Collection of the Musée des Beaux-Arts de Rouen. In the public domain in the United States because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Giuseppina_Grassini_by_Louise_%C3%89lisabeth_Vig%C3%A9e_Le_Brun.jpg