Helen studied medicine at the University of St. Petersburg following their marriage, a career pursuit she had to give up when she gave birth to her first child. The couple had two children, Prince Vsevelod Ivanovich of Russia (20 January 1914 -- 18 June 1973), and Princess Catherine Ivanovna of Russia ( Pavlovsk 12 July 1915 - Montevideo, Uruguay 14 July 2007). The three children and seven grandchildren of her daughter Princess Catherine, who married and later separated from Marchese Farace di Villaforesta, are the only great-grandchildren of Grand Duke Constantine Constantinovich of Russia and his wife Grand Duchess Elizabeth Mavrikievna.
Princess Catherine
Elizabeth Mavrikievna