Prince Heinrich Ruzzo Reuss of Plauen

Heinrich Ruzzo, Prince Reuss of Plauen (24 May 1950 in Lucerne – 29 October 1999 in Stockholm), known as Prince Ruzzo Reuss for short, was a Swedish-Swiss landscape architect and a prince of the former sovereign House of Reuss, which ruled the principalities of Reuss (now in modern Germany) for almost 800 years. His family branch was the royal family of the Principality of Reuss-Gera until 1918. He was married to former ABBA singer Anni-Frid Lyngstad, who became Frida, Princess Reuss of Plauen, following the marriage.