"Hermann Julius Theodor Hettner (March 12, 1821 – May 29, 1882), was a German literary historian and museum director.
He was born at Leisersdorf (Uniejowice), near Goldberg (Złotoryja), in Silesia. At the universities of Berlin, Halle and Heidelberg he concentrated on the study of philosophy, but in 1843 turned his attention to aesthetics, art and literature. In order to progress with these studies, he spent three years in Italy, and, on his return, published a Vorschule zur bildenden Kunst der Alten (1848) and an essay on Die neapolitanischen Malerschulen.
He became Privatdozent for aesthetics and the history of art at Heidelberg in 1847 where he associated he became acquainted with the philosopher Ludwig Feuerbach , the Dutch scientist Jacob Moleschott and the Swiss poet Gottfried Keller. While at Heidelberg, Hettner married Marie von Stockmar, daughter of statesman Christian Friedrich, Baron Stockmar. From this marriage, three children emerged, including the German archaeologist Felix Hettner [de]." - (en.wikipedia.org 11.08.2021)