Countess Alexandra von Zarnekau

Countess Alexandra Constantinovna von Zarnekau (графиня Александра Константиновна Зарнекау, 10 May 1883 – 28 May 1957) was the eldest daughter of Duke Constantine Petrovich of Oldenburg and his Georgian wife, Princess Agrippina Japaridze, Countess von Zarnekau, formerly married to the Georgian Prince Dadiani.

At age 16, on 16 February 1900, Countess Alexandra married Prince George Alexandrovich Yuryevsky, the son of Tsar Alexander II by his mistress (and later wife), Ekaterina Mikhailovna Dolgorukova, the Princess Yourievskya. They were married at Nice, France, and had one child, Prince Alexander Georgievich Yourievsky, who was born 21 December 1900. Alexandra and George divorced in 1908.

Countess Alexandra married secondly to Lev Vassilievich Naryshkin on 17 October 1908 at Paris, France. During World War I, Countess Alexandra worked as an administrator of the Russian hospital at Saloniki. After the war, she moved in Paris, France, where she died on 28 May 1957.