Paintings of interiors with people who may not have been that dressed up. Belgian. David de Noter, artist. Living from 1818 to 1892, he was the son of artist Jean Baptiste de Noter. Exhibited at the Salon de Paris and the Brussels Salon.

“The Artist’s Studio.” 1845. Belgian. Oil on panel. Signed and dated “David de Noter, 1845,” on the lower right. Image source: Bonhams. In the public domain in the United States because the artist has been dead over 100 years. via https://commons.wikimedia.org/wiki/File:David_de_Noter_-_The_artist%27s_studio.jpg
“Taking Tea.” 19th c. Oil on canvas. Signed “David de Noter”. Image © 2021 Mark Murray Fine Paintings. Fair use license. via https://www.markmurray.com/de-noter-david-taking-tea
“Preparing the Banquet.” 19th c. Signed on the lower right. Image © 1st-art-gallery.com. Artwork itself in the pubic domain due to age. via https://www.1st-art-gallery.com/David-Emil-Joseph-De-Noter/Preparing-The-Banquet.html