The court astrologers predicted that one of his sons would have a son at whose hands the Sassanian empire would come to grief, and Persia would become subject to foreign rule. Parwez felt much perturbed at this prediction. he placed a sexual embargo on his sons and decreed that none of them was to marry. His sons chafed at this decree. Shahryar his eldest son was secretly married by Shirin to a beautiful girl of a noble family. Of this union a son was born who was named Yazdjurd. The birth of the prince was kept a guarded secret.