Hartmann von Aue

Hartmann von Aue, also known as Hartmann von Ouwe, (born c. 1160–70, died c. 1210–20) was a German knight and poet. With his works including Erec, Iwein, Gregorius, and Der arme Heinrich, he introduced the Arthurian romance into German literature and, with Wolfram von Eschenbach and Gottfried von Strassburg, was one of the three great epic poets of Middle High German literature.

Notable works: Das Klagebüchlein, Das Büchlein, Gregorius, Der arme Heinrich, Erec, Iwein, Lieder

Source: Wikipedia — https://en.wikipedia.org/wiki/Hartmann_von_Aue