Yax Nuun Ayiin I had taken the…

Yax Nuun Ayiin I had taken the throne of Tikal on September 13, 379, soon after the death of the previous king Chak Tok Ich'aak I, apparently killed by the Teotihuacano conquerors.

Yax Nuun Ayiin is a son of Spearthrower Owl, a lord of Teotihuacan (probably that city's king) in central Mexico.

The installation of a Teotihuacano noble on the throne of Tikal marks a high point of Teotihuacan influence in the central Maya lowlands.

Yax Nuun Ayiin may have been a child or youth at the time of his coronation, and the early years of his reign seems to have been dominated by one of his father's generals, Siyaj K'ak', in a sort of regency.

His tomb, known as "Burial 10", was discovered by University of Pennsylvania archaeologists.

He is succeeded by his son Siyaj Chan K'awiil II, probably in 425.