According to one of the pedigrees, the fourth ancestor of Zingis, and the ninth of timour, were brothers; and they agreed, that the posterity of the elder should succeed to the dignity of khan, and that the descendants of the younger should fill the office of their minister and general. This tradition was at least convenient to justify the first steps of Timour's ambition (Institutions, p. 24, 25, from the MS. fragments of Timour's History.)