revision preference src: It is also not clear whether or not Rogvolod was the older brother of Davyd and Gleb. However, if he was given the Principality of Drutsk it, probably, corresponds to the line of succession which presumably made him second in that line. <SEP> tgt: It is also not clear whether or not Rogvolod was the older brother of Davyd and Gleb. If Rogvolod was given the Principality of Drutsk it, probably, corresponds to the line of succession which presumably made Rogvolod second in that line.