Grand Duke Alexander Mikhailovich of Russia
Grand Duke Alexander Mikhailovich of Russia was a dynast of the Russian Empire, a naval officer, an author, explorer, the brotherinlaw of Emperor Nicholas II and advisor to him.
Alexander was born in Tbilisi, in the Tiflis Governorate of the Russian Empire the son of Grand Duke Michael Nicolaievich of Russia, the youngest son of Nicholas I of Russia, and Grand Duchess Olga Feodorovna . He was mostly known as Sandro.
Source: Wikipedia