According to Wikipedia: "Johann Ludwig Tieck (May 31, 1773 – April 28, 1853) was a German poet, translator, editor, novelist, writer of Novellen, and critic, who was one of the founding fathers of the Romantic movement of the late 18th and early 19th centuries... Tieck's importance lay in the readiness with which he adapted himself to the emerging new ideas which arose at the close of the 18th century, as well as being a trailblazer in his own right with Romantic works such as der blonde Eckbert. His importance in German poetry, however, is restricted to his early period. In later years it was as the helpful friend and adviser of others, or as the well-read critic of wide sympathies, that Tieck distinguished himself. Tieck also influenced Richard Wagner's Tannhäuser. It was from Phantasus that Wagner based the idea of Tannhäuser going to see the pope and Elisabeth dying in the song battle."