Daujotas was one of the 5 elder Lithuanian dukes mentioned in the peace treaty with Halych-Volhynia in 1219. In the same document Vilikaila is mentioned as brother of Daujotas which suggests that Daujotas was the older or perhaps more influential brother.
Daujotas, one of five senior Lithuanian dukes recognized in the peace treaty with Halych-Volhynia in 1219, is likely the elder brother based on the document's mention of Vilikaila as his brother.