Portrait of Élisabeth Charlotte of Bourbon-Orléans (1676-1744). Undated, by 1744. French. Oil on canvas. François de Troy, painter (1679-1752). Image source: auctionartparis.com. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Troy,Fran%C3%A7ois_de-_%C3%89lisabeth_Charlotte_d%27Orl%C3%A9ans.jpgSpring. One of a set of four portraits of young princesses from the Louis XIV period represented as an allegory of the Four Seasons. ca. 1690. French. Oil on canvas. François de Troy, painter (1679-1752). Image source: proantic.com. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Workshop_of_Fran%C3%A7ois_de_Troy_-Allegory_of_the_Four_Seasons(2).pngPresumed portrait of the Duchesse de Maine. By 1700. French. Oil on canvas. Studio of François de Troy. Image source; artnet.com. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Studio_of_Fran%C3%A7ois_de_Troy_-_Presumed_portrait_of_the_Duchess_of_Maine.pngPortrait of Princess Louisa Maria Stuart. ca. 1705. French. Oil on canvas. François de Troy, painter (1679-1752). Image source: bridgemanartondemand.com. In the public domain in the United States because the artist died over 100 years ago. via https://commons.wikimedia.org/wiki/File:Fran%C3%A7ois_de_Troy,Portrait_of_Princess_Louisa_Maria_Stuart(c._1705).jpg
Louisa Anne Beresford (nee Stuart), Marchioness of Waterford. 1859-1860. British. Oil on canvas. Francis Grant, painter (1803-1878). Collections of the National Portrait Gallery, London. Cc0 License. via https://www.npg.org.uk/collections/search/portrait/mw06604/Louisa-Anne-Beresford?“Kniende Stifterin” (detail). 1450-1460. Early Netherlandish. Tempera and oil on panel. Petrus Christus, painter (1410/1420-1475/1476). Collections of the National Gallery of Art, Washington, DC. In the public domain in the United States because the artist has been dead over 100 years. via https://commons.wikimedia.org/wiki/File:Petrus_Christus_004_detail.jpgPortrait of Marguerite Stern. 1889. French. Charles-Auguste-Emile Durand known as Carolus-Duran, artist (1837-1917). Collections of the Musee du Petit Palais, Paris. Artwork itself in the public domain due to age. via https://www.artrenewal.org/artists/carolus-duran/7598