Heinrich XI, Prince Reuss of Greiz
Heinrich XI, Prince Reuss of Greiz (; 18 March 172228 June 1800) was the first Prince Reuss of Greiz from 1778 to 1800. Early life. Heinrich XI was born at Greiz, Reuss, youngest child of Count Heinrich II Reuss-Obergreiz (1696–1722), (son of Heinrich VI, Count Reuss-Greiz and Baroness Henriette Amalie von ) and his wife, Countess Sophie Charlotte von (1697–1748), (daughter of Count Hans Kaspar von Bothmer and Gisela Erdmuth von ). Succession to Obergreiz and Untergreiz. Heinrich succeeded his brother Henry IX as Count of Reuss-Obergreiz 17 March 1723. After the death of  Count Henry III Reuss-Untergreiz, in 1768, including the city of Untergreiz passed to the domains of the Heinrich XI and he was able to gather these possessions and guaranteed the line of succession. Prince Reuss of Greiz. On 12 May 1778 Heinrich was elevated to Prince of the Holy Roman Empire () by the Holy Roman Emperor Joseph II. He received the Order of Saint Stephen of Hungary as well. First marriage and issue. Heinrich XI married on 4 April 1743 in Köstritz to Countess Conradine Reuss-Köstritz (1719–1770), youngest daughter of Heinrich XXIV, Count Reuss-Köstritz, and his wife , Baroness Marie Eleonore Emma von . They had eleven children: Second marriage. Heinrich married secondly on 25 October 1770 in Frankfurt am Main to Countess Alexandrine of Leiningen-Dagsburg-Heidesheim (1732–1809), second daughter of Christian Karl Reinhard, Count of Leiningen-Dagsburg-Heidesheim, and his wife, Countess Catharine Polyxene of Solms-Rödelheim und Assenheim; they had no issue.