Tomaso Antonio Vitali was an Italian violinist and composer born on March 7, 1663 (J. S. Bach would not be born for another 22 years.) He is mostly famous for a very popular chaconne in g minor for violin and piano which has been attributed to him, despite questions as to its provenance. Ferdinand David (German violinist of the Nineteenth Century) heavily reconstructed or arranged the piece many years later. Vitali died in 1745. I really don't know if this is what he looked like. The portrait may or may not be that of Vitali, but some people say it is.