The Columbia Encyclopedia, Sixth Edition. 2001-07.
Arias de Ávila, Pedro
(p´thr ä´ryäs d ä´vlä) (KEY) , known as Pedrarias (pthrä´ryäs) (KEY) , c.14401531, Spanish colonial administrator. He was sent (1514) as governor to Darién (now part of Panama), then under the rule of Vasco Núñez de Balboa. A long quarrel between the two ended with Balboas execution. Pedrariass administration was notoriously harsh and cruel, but he extended the Spanish dominions and founded (1519) Panama City; he first aided, but later hindered, Francisco Pizarro and Diego de Almagro in their conquest of Peru. His name also appears as Pedrarias Dávila.