Jean-Pierre-Antoine Rey (21 December 1767 - 12 January 1842) commanded a famous French infantry regiment during the Napoleonic Wars and became a general officer in 1808. He led an infantry brigade in a number of actions in Spain. His brother Louis Emmanuel Rey was a French general of brigade who also served in Spain during the Peninsular War. Since most sources do not distinguish between the generals named Rey, the two are easily confused.
Read more about Jean-Pierre-Antoine Rey: Early Career, Spain