After the Revolution , her father was arrested and deported from the capital and her mother followed her husband into exile .
Born in Pavlovsk Palace , she was the second child of Prince John Konstantinovich of Russia and Princess Jelena of Serbia .
After the Revolution , child 's father was arrested and deported from the capital and her mother followed her husband into exile .
Born in Pavlovsk Palace , she was the second child of Prince John Konstantinovich of Russia and Princess Jelena of Serbia .