Otto III. Weimar-Orlamünde, sometimes called Otto IV was a German nobleman. He was a member of the House of Ascania and a titular Count of Weimar-Orlamünde. He was the ruling Count of Weimar and Lord of Rudolstadt and Plassenburg. Wikipedia
Born: 1244
Died: June 1285 (age 41 years)
Great-grandparents: Otto I, Count of Burgundy, Agnes of Rochlitz, Margaret, Countess of Blois, and more
Grandchildren: Otto VI of Weimar, Hermann VI., Elisabeth of Orlamünde-Plassenburg, and more
Children: Otto IV, Count of Weimar-Orlamünde and Agnes von Weimar-Orlamünde
Partner: Agnes of Saarbrücken