Both were advanced in years, and both had domestic troubles to occupy them.

Kobad was at this time especially anxious about the succession.

He had four sons, Kaoses, Zames, Phthasuarsas, and Chosroes, of whom Kaoses was the eldest.

This prince, however, did not please him.

His affections were fixed on his fourth son, Chosroes, and he had no object more at heart than to secure the crown for this favorite child.