Princess is a regal rank and the feminine equivalent of prince (from Latin princeps, meaning principal citizen). Most often, the term has been used for the consort of a prince, or for the daughter of a king or prince.
Elisabeth Christine of Brunswick-Wolfenbüttel (8 November 1715 – 13 January 1797) married Frederick II of Prussia, no issue. Ludwig Ernest of Brunswick-Wolfenbüttel (25 September 1718 – 12 May 1788) died unmarried. Ferdinand of Brunswick-Wolfenbüttel (12 January 1721 – 3 July 1792) died unmarried.