An alternative history is provided by the contemporary writer Inca Garcilaso de la Vega, son of an Inca princess and a conquistador. He said the name ''Birú'' was that of a common Amerindian who was happened upon by the crew of a ship on an exploratory mission for governor Pedro Arias de Ávila and went on to relate more instances of misunderstandings due to the lack of a common language.