Born in Pavlovsk Palace, she was the second child of Prince John Konstantinovich of Russia and Princess Helen of Serbia. After the Revolution, her father was arrested and deported from the capital and her mother followed her husband into exile. Catherine and her brother, Vsevolod, remained in the care of her grandmother, the Grand Duchess Elizaveta Mavriekievna of Russia. On 18 July 1918, their father, Prince John, was killed, and their mother, Princess Jelena, was arrested and spent several months in Soviet prisons. Grand Duchess Elizabeth was able to take Catherine and her brother to Sweden. Sometime later, they were reunited with their mother. The family lived in Serbia, then moved to England. There, Catherine received an excellent education, although she never learned the Russian language because her mother, devastated by her husband's death, did not want her children speaking that language in front of her.
Marriage
From 1937 to 1945, Princess Catherine Ivanovna lived in Italy. During her stay there, she married the Italian diplomat Ruggero Farace, Marchese Farace di Villaforesta, in Rome on 15 September 1937; on occasion of her wedding, she renounced to her succession rights to the Russian throne.
Farace di Villaforesta family
Marchese Ruggero Farace Farace di Villaforesta was son of Alfredo, Marchese Farace di Villaforesta, member of an old Sicilian noble family and Greek aristocrat Caterina Fachiri, who was descendant of some of the most prominent Phanariote families of Constantinople, such as Rallis, Vlastos, :File:Prince_Mavrocordat_coat_of_arms..jpg|Mavrocordato and :File:Armes_Rodocanachi.png|Rodocanachi, making her also related to former ruling families of :List of rulers of Wallachia|Wallachia & :List of rulers of Moldavia|Moldavia. Through mutual descent from Princes of Mavrocordato Ruggero was distantly related to Queen Natalia of Serbia, Princess Aspasia of Greece and Denmark and her daughter Queen Alexandra of Yugoslavia, who was married to his wife's first cousin King Peter II of Yugoslavia.
Children
They had three children:
Nobile Nicoletta Farace ; married on 25 March 1966 to Alberto Grundland. They had two children:
*Eduardo Alberto Grundland ; married on 15 November 1999 to Maria Ester Pita Blanco and had one son.
*Alexandra Gabriella Grundland ; married on 24 March 2001 to Roberto Castro Padula and had one son.
Nobile Fiammetta Farace ; married firstly on 16 September 1969 to Victor Carlos Arcelus and secondly in 1981 to Nelson Zanelli. She had three children:
*Victor John Arcelus.
*Sebastian Carlos Arcelus, married on 16 October 2007 to Stephanie Janette Block and had one daughter.
*Alessandro Zanelli.
Giovanni Farace, Marchese Farace di Villaforesta ; married on 14 February 1968 to Marie-Claude Tillier-Debesse and had two sons:
*Alessandro Farace.
*Yann Farace ; married on 4 October 2009 to Anne-Sophie Laignel and had one son.