The details
Biography
Bartira (also known as M’bicy, Burtira or Isabel Dias) (1497-1580) was the daughter of Tibiriçá, Chief of the Tupiniquim people of Piratininga and other tribes.
Bartira took the name Isabel Dias and married a Portuguese man, João Ramalho, whose settlement became the nucleus of the modern Brazilian city of São Paulo.
She and Ramalho had a number of children who married into prominent Portuguese/Brazilian families. Through her daughter, Joana, she is an ancestress of Queen Silvia of Sweden.