CHIMALPOPOCA (che-mal-po-po'-ca), third Mexican or Aztec king (fifth king, according to some accounts), died in 1423. He was elected by the senate to succeed Huitzilihuitl on the same day that the latter king died, 2 February, 1414. He advised Tayauh or Tayatzin to kill his eldest brother, Maxtla or Maxlaton, who had been recognized heir to their father Tezozomoc, tyrant of Azcapotzalco, but the plot was discovered. Then Maxtla ordered a feast to be prepared in honor of his brother and Chimalpopoca, in order to have them mardered together; but the latter could not go, and Tayauh was the only one killed at the banquet. Maxtla sent a strong detachment to Mexico to imprison Chimalpopoca, who had attempted to commit suicide, and had him taken to Azcapotzal-co, confined in a wooden cage under close surveillance, and almost starved to death, when the prisoner succeeded in taking his own life by hanging from a beam of his cage.