Note 5 — Chapter I · RUMOURS.
Selina Gaye translation
Temudschin was but thirteen when he became chief (in A. D. 1175) of one horde, consisting of thirty to forty thousand families. After some vicissitudes, he entered upon a career of conquest, and, between 1204 and 1206, he summoned the chiefs of all the hordes and tribes who owned his sway to an assembly, at which he caused it to be proclaimed that "Heaven had decreed to him the title of 'Dschingiz' (Highest), for he was to be ruler of the whole world." From this time he was known as Dschingiz, or Zenghiz Khan.