 However, the historical records of some of these figures are scanty or rely completely on the documentation of those outside the person's culture, so it is possible such figures may have had other names within their own cultures that have since been lost to history.During the early Middle Ages, mononymity slowly declined, with northern and eastern Europe keeping the tradition longer than the south; an example is Edeko, the East Germanic chieftain whose son ruled Italy as Flavius Odoacer.By the end of the period, surnames had become commonplace