 The Nahuatl speakers agreed that Culhuacán was the first city to give its rulers the title of "speaker" ("tlatoani").Culhuacan was perhaps the first of the chinampa towns founded on the shores of Lake Xochimilco, with chinampas dating to 1100 C.E.From written records there is evidence that Culhuacan survived the fall of Tollan and maintained its prestige until the mid-14th century.