Oldest human portrait

This gentleman's name was Robert Cornelius. He produced the world's first human self-portrait. According to Wiki :

With his own knowledge of chemistry and metallurgy, as well as the help of chemist Paul Beck Goddard, Cornelius attempted to perfect the daguerreotype. Around October 1839, Cornelius took a portrait of himself outside of the family store. The daguerreotype produced shows an off center portrait of a man with crossed arms and tousled hair. This self-portrait of Robert Cornelius is the first photograph of a human to be produced.