Such a charming portrait, hand painted in gouache on thin wafer and beautifully preserved in the original oval wood frame with slightly convex cover glass. It's unusual for these to have an easel back, and it might be that it was added later. There is an ID on a paper label, as well as "du Pierre Devay", which means by Pierre, Devay, the artist. I've done a cursory search to find more about this young woman, and met a dead end. One might go further into French genealogy sites to know her better. Her white gown has special attention with that elegant diaphanous collar, puffed sleeves - the fashion can fall anywhere between c.1810-30. On might expect to see her with a French Empire tiara, but she has only small gold earrings. Typically a red shawl or sash or scarf worn similarly to hers was an icon declaring alliance and allegiance to the Royals, or to show an ancestral line to someone whose fate was a guillotine during The Terror, in late 1700s. She is beautifully preserved, and full measurements noted on the photos for your review.
Very good to excellent condition for age and type, no flaws to note, and as described above. Frame is in nice condition as well, and the easel may have been added slightly later. Can be hung or displayed with easel.