Mononymous person town of Stendal, birthplace of the German art historian Johann Joachim Winckelmann, whom Stendhal admired. In the 20th century, a fourth French writer, Sidonie-Gabrielle Colette (author of "Gigi", 1945), used her actual surname as her mononym pen name, Colette. Some French actors and singers have used their given name or surname as a stage mononym. In the 17th and 18th centuries, most Italian castrato singers used mononyms as stage names (e.g. Caffarelli, Farinelli). The German writer, mining engineer and philosopher, Georg Friedrich Philipp Freiherr von Hardenberg (1772–1801), became famous as Novalis. The 19th-century Dutch writer Eduard Douwes Dekker (1820–87), better
Sidonie of Saxony II of Brunswick-Lüneburg (1528–1584), who was ten years her junior. The wedding ceremony was held in Hann. Münden without the usual pomp and circumstance. Initially, they liked each other. Eric had been engaged to Agnes of Hesse. When the marriage was negotiated at the court in Kassel, however, he had met Sidonie. He liked her, and broke off the engagement with Agnes, in order to marry Sidonie. Landgrave Philip I of Hesse predicted: "All sorts of things will happen inside this marriage after the kissing month ends." Two years into the marriage, in 1547, Duke Eric began his rule and