|Merfolk of Patagonia|
A Spanish writer noted that in 1632 a mermaid had been reported a number of times off Chiloe in Chile. She was carrying a child. She had long fair hair (or a mane), breasts like those of a human female and the tail and back of a fish.
This mermaid was identified with Pincoya, a South American legendary mermaid, who, with her husband Pincoy, was supposed to rule part of the sea. Her father was a merman called Epuange or Millalomo, himself the hybrid of a sea-lion and a woman.
I have taken this information from the website Patagonian Monsters, operated by Lawrence Whittall.