rudolf lehmann was a german-born british portraitist and author. he moved to the united kingdom in 1866. lehmann studied in paris at the école des beaux-arts, in rome, and with the painters peter von cornelius and wilhelm von kaulbach. his major painting, the blessing of the pontine marshes by sixtus v was shown in paris in 1846 and bought by the french government. lehmann settled in london, became a british citizen, and painted his be…