After returning to Spain, Cabeza de Vaca was appointed governor of the Río de la Plata region and reached Asunción after an overland journey from the Brazilian coast in 1542. His South American career was sadly different from that in North America. He got into trouble with the popular Domingo Martínez de Irala, and after he returned from a journey up the Paraná River to Bolivia, he was arrested, accused of high-handed practices, imprisoned for two years, and sent back to Spain. There he was found guilty but was pardoned by the king. Cabeza de Vaca wrote his own account of the South American events in his Comentarios (1555).
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