This is the mythical genealogy of the Lang Pakmodru (rLangs Phag mo gru), who originated in eastern Tibet and rose to a position of political power in central Tibet in the fourteenth century. The basic genealogy is probably of ancient origin and was redacted in the form known today when the Pakmodru acquired their power. The text contains an account of the names and lives of the members of this extended family, including heroes and religious figures. One of the most important of these is Jangchub Drékol (Byang chub ’dre bkol), who is said to have lived in around the eleventh century, and who meets Ling Gesar, in eastern Tibet.