Pachacutec or Pachacuti Inca Yupanqui (Quechua: Pachakutiq Inka Yupanki) was the ninth Sapa Inca (1418–1471/1472) of the Kingdom of Cusco which he transformed into the Inca Empire. He is one of the most important and powerful Incas of the entire Empire.
In Quechua Pachakutiq means “he who overturns space and time” (though more commonly translated as “earth shaker”) and Yupanki means “with honor”.
Pachacuti’s original name was Cusi Yupanqui and he was not supposed to succeed his father Inca Viracocha who had appointed his brother Urco as crown prince. However in the midst of an invasion of Cusco by the Chankas, Pachacuti rallied the army (even though his father/brother feld the battlefield) and defeated the Chankas. The Chankas were defeated so severely that legend tells even the stones rose up to fight on Pachacuti’s side. Pachacuti became known as “The Earth Shaker” following the battle, and won the support of his people.