The first historically significant king of this dynasty was Vivaswan 's grandson Ikshvaku ( इक्ष्वाकु ) , so the dynasty is also known as the Ikshvaku dynasty .
The first historically significant king of this dynasty was Vivaswan 's grandson Ikshvaku ( इक्ष्वाकु ) . 
 The dynasty is also known as the Ikshvaku dynasty .