[IV-8] Also written Tula, Tulan, Tulla, Tullan, and Tulha.
[IV-9] Chalcatzin, Tlacamilitzin, Checatl, Cohuatzon, Mazacohuatl, Tlapalhuitz, and Huitz. _Veytia_, tom. i., p. 207. Chalcatzin, Acatl, Eccatl, Cohuatzin, Mazacohuatl Otziuhcohuatl, Tlapalhuiz, and Huitz. _Ixtlilxochitl_, p. 393. Zaca, Chalcatzin, Ecatzin, Cohuazon, Tzihuacohuatl, Tlapalmetzotzin, and Metzoltzin. _Id._, p. 450. Tlacomihua or Acatl, Chalchiuhmatz, Avecatl, Coatzon, Tziuhcoatl, Tlapalhuitz, and Huitz. _Id._, pp. 206-7. Tzacatl, Chalcatzin, Ehecatzin, Cohuatzon, Tzihuac-Cohuatl, Tlapalmetzotzin, and Metzotzin. _Torquemada_, tom. i., p. 37. Tzacatl, Telacalzin, Echecalzin, Cohualzon, Tezihuaccoahuatl, Tlapalmezoltzin, and Melzolzin. _Boturini_, in _Doc. Hist. Mex._, série iii., tom. iv., p. 230.
[IV-10] _Ixtlilxochitl._ Called also Achcauhtzin, _Cabrera_, _Teatro_, p. 95. Icoatzin, _Veytia_, tom. i., p. 301.
[IV-11] _Torquemada_, tom. i., p. 37; _Clavigero_, tom. i., p. 127; _Brasseur de Bourbourg_, _Hist. Nat. Civ._, tom. i., p. 215. Chalchiuhtlanetzin, or Chalchiuhtlatonac. _Veytia_, tom. i., pp. 233, 301. Chalchiuhtlahuextzin, _Ixtlilxochitl_, p. 393. Tlalchiuhtlanelzin. _Boturini_, in _Doc. Hist. Mex._, série iii., tom. iv., p. 230. Ixtlilxochitl seems to imply, in another part of his writings, _Hist. Chich._, p. 207, that the king was chosen among the Toltecs themselves. This Sr Pimentel, in _Dicc. Univ._, tom. x., p. 611, deems much more probable than the course indicated in the other accounts.
[IV-12] 503 or 510 or 509 or 556. _Ixtlilxochitl_. 700, et seq. _Torquemada_. 713-19. _Veytia_. Brasseur has 718. 670, et seq. _Müller_. All the authorities agree on 7 Acatl as the date of the establishment of the kingdom. Clavigero interprets the date as 667.
[IV-14] 608 A.D., according to _Ixtlilxochitl_, p. 450. On the establishment of the Toltecs in Tollan and the reign of the first king, see: _Ixtlilxochitl_, in _Kingsborough's Mex. Antiq._, vol. ix., pp. 206-7, 322-5, 336, 392-3, 450, 458, 460; _Veytia_, _Hist. Ant. Mej._, tom. i., pp. 221-39; _Clavigero_, _Storia Ant. del Messico_, tom. i., pp. 126-7, tom. iv., pp. 46, 51; _Sahagun_, _Hist. Gen._, tom. iii., lib. x., pp. 106-15, 145, lib. xi., p. 312; _Torquemada_, _Monarq. Ind._, tom. i., pp. 37, 254; _Boturini_, _Idea_, pp. 77, 139; _Id._, in _Doc. Hist. Mex._, série iii., tom. iv., p. 230; _Gomara_, _Conq. Mex._, fol. 299; _Motolinia_, _Hist. Indios_, in _Icazbalceta_, _Col. de Doc._, tom. i., p. 5; _Vetancvrt_, _Teatro Mex._, pt ii., p. 11; _Cabrera_, _Teatro_, p. 95; _Arlegui_, _Chrón. Zacatecas_, p. 6; _Brasseur de Bourbourg_, _Hist. Nat. Civ._, tom. i., p. 209, et seq.; _Orozco y Berra_, _Geografía_, p. 138; _Prescott's Mex._, vol. i., pp. 12-13; _Müller_, _Amerikanische Urreligionen_, p. 524; _Mayer's Mex. Aztec, etc._, vol. i., p. 95; _Chevalier_, _Mexique_, p. 55; _Gondra_, in _Prescott_, _Hist. Conq. Mex._, tom. iii., p. 20; _Schoolcraft's Arch._, vol. v., p. 95; _Waldeck_, _Voy. Pitt._, p. 46; _Pimentel_, in _Dicc. Univ._, tom. x., pp. 610-11.