Before the Spanish came to America, indigenous nomadic people settled early on in the New World, as far south as southern Argentina and Chile. Magellan called this area Patagonia. It's gorgeous - especially the Chubut River Valley.
Welsh emigration to the Chubut Province began in about 1865 in response to the Argentine government's invitation to western Europeans to settle the sparsely populated areas outside Buenos Aires. By 1875, there were 34 settlements of various western European ethnicities.
There are now over 50,000 Patagonians of Welsh descent. Only about 1500 actually still speak Welsh. The Welsh colony in Patagonia is called Y Wladfa.