When Maxtla (MASH-tla), son of Tezozomoc of Azcapotzalco, rose against his half brother, the presumed heir, and killed him,24 Maxtla was undoubtedly assuming that he would receive help from his mother’s home village, and he did. At the same time, he turned against Azcapotzalco’s former allies, whose royal houses were all intermarried with the maternal family of the half brother he had killed, specifically, the royal household of the town of Tlacopan. This meant that Maxtla also targeted Tenochtitlan’s chief, Chimalpopoca, who had a Tlacopan mother.