Anastasia de Torby
Countess Anastasia Mikhailovna of Torby, CBE , otherwise styled Lady Zia Wernher, was the elder daughter of Grand Duke Michael Mikhailovich of Russia, a grandson of Tsar Nicholas I of Russia, by Countess Sophie of Merenberg.
Like her mother, Anastasia was born of a morganatic marriage, and was ineligible to bear her fathers title or rank. Following her parents elopement to San Remo in 1891 and consequent banishment from Russia, Sophia was made Countess de Torby by Adolphe, Grand Duke of Luxembourg, which title extended to all three of the couples children. Through her mother, she descended from the renowned Russian poet Alexander Pushkin, as well as from his ancestor Abram Petrovich Gannibal, Peter the Greats African protg.
Source: Wikipedia