According to their plan, the principal Russian officials were to be invited to a ball where they would be either arrested or killed. Then Alexander would be invited to assume the crown of Georgia, possibly as a constitutional monarch. Alexander corresponded with the conspirators and had his own agent among their numbers, but the prince considered himself too old to be directly involved and told the Georgians "to do what they liked". The plot was eventually betrayed and its leaders were rounded up by the Russian authorities. Having abandoned all hopes of returning to Georgia, Alexander continued to live as a private person and died in obscurity in Tehran in 1844. He was buried in the courtyard of St. Thaddeus and Bartholomew Armenian Church. Family and descendants In the lifetime of his father, in 1790, Alexander was betrothed to the daughter of a Circassian chief from Greater Kabarda, of the Misostov clan. Monteith refers to her as Alexander's wife, but the girl, baptized in Georgia as Nino, died after her arrival in Tiflis before the marriage was effected. Alexander married Mariam (12 August 1808 – 7 October 1882), a daughter of the Armenian dignitary Sahak Melik-Aghamalyan, in 1825 in Erivan. The Iranian governor of the Erivan Khanate, Hossein Khan Sardar, maintained good relations with Sahak and had played an instrumental role in arranging the marriage. Through her mother, Mariam was a cousin of the prominent Armenian writer Khachatur Abovian. In 1827 she, together with their son, Irakli, settled in her native Erivan, which was soon conquered by Russia. In 1834 the Russian government ordered her to move to Saint Petersburg, where she was known as tsarevna Maria Isaakovna Gruzinskaya (Russian for "of Georgia") and lived on a state-granted pension until her death in 1882. Mariam's remains were moved to Tiflis and interred there, at the northern wall of the Armenian Vank cathedral. After the demolition of the cathedral by the Soviet government in 1930, her marble gravestone with a trilingual Russian, Armenian, and Georgian epitaph was moved to the State Museum of the History of Georgia in Tiflis (now Tbilisi). Alexander's son, Prince Irakli (18 August 1826 – 27 April 1882), pursued an officer's career in the Russian army. Irakli's only son of his marriage to Princess Tamar Chavchavadze, Alexander, died at the age of 2 in 1879. His daughters, Yelizaveta (1870–1942) and Yekaterina (1872–1917), were married to the princes