Tạo Xuông is the founding ancestor at the head of the Black Tai settlement chronicle. Bearing the aristocratic title tạo, he is remembered as the first lord to lead the Tai down into Mường Lò, the fertile basin around present Nghĩa Lộ (Yên Bái) that the chronicles treat as the cradle of Tai occupation of the Northwest. Together with his son Tạo Ngần he anchors the genealogy of the Lò aristocratic lineage from which later mương-lords, including the conqueror Lạng Chượng, are reckoned to descend. He is venerated among the ancestral spirits (pú đẳm) of the founding line.