Prince August Ferdinand of Prussia (German: August Ferdinand von Preußen; 23 May 1730, Berlin – 2 May 1813, Berlin) was a Prussian Prince and general, and Herrenmeister ("Master of the Knights") of the Bailiwick of Brandenburg of the Order of Saint John. He belonged to the House of Hohenzollern, and was the youngest son of Frederick William I of Prussia by his wife Queen Sophia Dorothea.He was the youngest child of King Frederick William I of Prussia and his wife Sophia Dorothea of Hanover. He was also a younger brother of King Frederick the Great (Frederick II of Prussia), Queen Louisa Ulrika of Sweden, and Wilhelmine Margravine of Brandenburg-Bayreuth. Wikipedia
Who is popular today?