The name Patagonia comes from the word patagón used by Magellan in 1520 to describe the native people that his expedition thought to be giants. It is now believed the Patagons were actually Tehuelches with an average height of 180 cm compared to the 155 cm (~5?1?) average for Spaniards of the time.
The Argentine portion of Patagonia includes the provinces of Neuquén, Río Negro, Chubut and Santa Cruz, as well as the eastern portion of Tierra del Fuego archipelago and the southernmost department of Buenos Aires province: Patagones. The Argentine politico-economic Patagonic Region includes the Province of La Pampa.
The Chilean part of Patagonia embraces the southern provinces and regions of Valdivia, Llanquihue, Aysén and Magallanes, including the west side of Tierra del Fuego and Cape Horn, and Palena Province in Los Lagos Region