I posted the above portrait of a Major of the 21e Ligne on my Facebook Group an TMP. My first thought was it could be Major Pierre-Etienne Fabry, but it could be another man as Fabry left the regiment on 31 March 1809 to become Colonel en Second of the 9th Demi-Brigade de Reserve. He later became the Colonel of the 26e Ligne in 1810. His Base Leonore file. link
However, thanks to the help of Paul Lindsay Dawson, the portrait most likely is Major Jean-François Rome. According to Mr. Dawson, "judging by the shako plate, which is the 1808 model, used until 1813, I assume it to be Jean Francois Rome."
Many may know him better as the Colonel of the 7e Legere during the Russian Campaign in 1812. Looking at his portrait as a General de Brigade and comparing it to the man in the first portrait, his chin, nose, and smirk are spot on. Always fun to put a name to a face.