Yuri Dolgorukiy
David's daughter Tamar was given in marriage to the shah of Shirvan Manuchehr III. She founded the monastery of Tighva in Georgia and became a nun in widowhood. Kata married into the Byzantine imperial family c. 1116. The identity of her husband is not revealed by the medieval sources. He may have been Isaac Komnenos (a son of the emperor Alexios I Komnenos), Alexios Bryennios (a son of Nikephoros Bryennios the Younger and Anna Komnena), or Alexios Komnenos (a son of the emperor John II Komnenos). If the first theory is true and Helene, a daughter of Isaac and Kata, was indeed the wife of the Rurikid Rus' prince Yuri Dolgorukiy, then this marriage may have provided, through descent from antiquity, a Bagratid ancestry to numerous Russian and Polish descendants.