Torquemada gives another account of the events which led to the war. Itzmitl, who succeeded to the lordship of Coatlichan on the death of his father Tzontecoma, had a son named Huetzin by Malinalxochitl, daughter of Cozcaquauhtli of Mamalihuasco,[V-34] for whom he was anxious to secure a temporary regency until he should in natural course succeed to the government of Coatlichan. Relying on a promise made by Xolotl I. to Tzontecoma, Itzmitl asked Xolotl II. to award his son a lordship, and pointed to Culhuacan as available since it was an unappropriated Toltec settlement, to which he had a certain right from the marriage of Tzontecoma with a member of its royal family. Xolotl informed Achitometl, a grandson of Nauhyotl, of his wish that Huetzin should stay with the king of Culhuacan until he succeeded to his own inheritance.[V-35] Achitometl, pretending to favor the project, immediately sent information to Nauhyotl, who at once took steps to secure himself. Xolotl paid a visit to Culhuacan to make formal arrangements for the reception of his protégé, and was received with the most friendly assurances. But when Huetzin arrived, after the departure of Xolotl, an armed force opposed his entrance, and he precipitately retreated. This breach of faith caused a war, which resulted in the death of Nauhyotl, and the elevation of Huetzin to the throne.[V-36]
Brasseur's relation of these events, partly derived from the manuscripts to which he had access, differs from the others in some particulars, though it generally agrees with Torquemada's account. According to this writer, Huetzin, who, it is here stated, was Pochotl's grandson on the mother's side,[V-37] coveted and endeavored to obtain the crown of Culhuacan prior to the arrangement made between his father and Xolotl. To gain this end he had, on account of his descent, the assistance of the Acolhuas, who were at all times disposed to reëstablish the original Toltec dynasty, and the sympathy of Xolotl II. and his son Nopaltzin, who were of course inclined to favor any scheme that would cripple Nauhyotl. The king of Culhuacan defeated Huetzin's plans for the time, however, by proclaiming Achitometl--Pochotl's eldest son, by the princess Xochipantzin, and consequently Nauhyotl's grandson--as his successor, thus restoring the ancient dynasty, and doing away with the pretext under which the pretender had won so much sympathy. It seems that the claims of Huetzin met with no farther notice until the death of Quauhtexpetlatl, a son of Nauhyotl II., who had accompanied his father into exile, and after his death had returned to Culhuacan and been associated with Nauhyotl III., the present king. Upon the death of this prince, which occurred in 1129, Xolotl entered into an agreement with the lord of Coatlichan to procure for Huetzin, the son of the latter, Quauhtexpetlatl's share in the government of Culhuacan. Hence followed the struggle, detailed by Torquemada, which resulted in Huetzin's elevation to the throne he had so long coveted.[V-38]