Culhuacan
Culhuacan was a Nahua city-state on the Ixtapalapa peninsula between Lakes Texcoco and Xochimilco. Its rulers were regarded as heirs of Tollan; in 1337 Achitomecatl Teomecatl II held the throne.
Acamapichtli, the first ruler of Tenochtitlan, was a grandson of Culhuacan's Coxcoxtli. In 1377 Azcapotzalco subdued Culhuacan largely with Mexica troops, ending its independence. After overthrowing Tepanec power in 1428, Itzcoatl took the title Ruler of the Culhua.