Oswald Achenbach

Oswald Achenbach (; 2 February 18271 February 1905) was a German painter associated with the Düsseldorf school of painting. During his lifetime, he was counted among the most important landscape painters of Europe. Through his teaching activities, he influenced the Kunstakademie Düsseldorf. His brother, Andreas Achenbach, who was twelve years older, was also among the most important German landscape painters of the 19th century. The two brothers were humorously called "the A and O of Landscapes" (a reference to their initials matching a common German reference to the Alpha and Omega). Provided by Wikipedia