There’s scant biographical information on Johann Nepomuk Rauch (1804-1847). He was born in Vienna, Austria, studied at the Vienna Academy and lived in Florence between 1829 and 1831. He then spent about a decade in Moscow. There he lived on commissions for watercolors and paintings, among his patrons were Prince Golitsyn and Count Panin. From 1841 he lived in Rome. That’s it.