Roger's son and successor was William the Bad, though his nickname derives primarily from his lack of popularity with the chroniclers, who supported the baronial revolts William crushed. His reign ended in peace (1166), but his son, William the Good, was a minor. During the boy regency until 1172, the kingdom saw turmoil which almost brought the ruling family down, but eventually the realm settled down and the reign of the second William is remembered as two decades of almost continual peace and prosperity. For this more than anything, he is nicknamed "the Good". His death without heirs in 1189 threw the realm into chaos, as his designated and only legitimate heir, his aunt Constance, daughter of Roger II, had married Henry, son of Frederick I, Holy Roman Emperor, and the Sicilian officials did not want a German ruler.