An expedition commanded by Pizarro and his brothers explored south from what is today Panama, reaching Inca territory by 1526. After one more expedition in 1529, Pizarro received royal approval to conquer the region and be its viceroy. The approval read: "In July 1529 the queen of Spain signed a charter allowing Pizarro to conquer the Incas. Pizarro was named governor and captain of all conquests in New Castile." The Viceroyalty of Peru was established in 1542, encompassing all Spanish holdings in South America.