Maria Beatrice d’Este was heiress of Modena and Reggio as well as the sovereign of Massa and Carrara from 1790 until 1796 and from 1815 until her death in 1829.
Wikipedia https://en.wikipedia.org/wiki/Maria_Beatrice_d'Este,_Duchess_of_Massa
Address 17 Beatrixgasse, Wien 1030, Austria
Coordinates 48°12'9.865" N 16°23'3.049" E
