She was his wife , Grand Duchess Alexandra , a former princess of Saxe - Altenburg .
Olga was born at Pavlovsk Palace near Saint Petersburg on 3 September 1851 .
Olga was his Olga , Grand Duchess Alexandra , a former Olga of Saxe - Altenburg .
Olga was born at Pavlovsk Palace near Saint Petersburg on 3 September 1851 .