Tecpancaltzin Iztaccaltzin was the ninth Tlatoani, ruler of the Toltec Empire.

In 843, a Toltec man named Papantzin invented a type of sugar made from the Agave plant.

He and his daughter Xochitl brought the sugar as a gift to Tecpancaltzin Iztaccaltzin.

He convinced Papantzin not to help her by telling him that when Tecpancaltzin died, Xochitl would be the ruler of the Toltecs.

Xochitl threatened to leave in 846 but Tecpancaltzin managed to keep her there by promising Meconetzin would be the next Tlatoani.