IDIAQUEZ, Lope de (e-de'-ah-keth), Spanish soldier, born in the latter part of the 15th century; died in Chili about 1550. He participated in the conquest of Cuba under Diego Velasquez, and in 1519 went to Mexico, where he served under Pedro de Alvarado till the subjugation of the Mexicans. Afterward he accompanied Alvarado to Guatemala, subsequently was with Pizarro in his enterprise, and made an unsuccessful attempt to reconcile him with Almagro. He prepared the conferences of Mara and was present at the battle of Las Salinas, 6 April, 1538, where Almagro was defeated. It is believed that, in 1541 he went to Spain. In 1542 he was commissioned by Diego de Almagro, the son, to make an agreement with the governor, Vaea de Castro, on the eve of the battle of Chupas, and, though he was not well received by De Castro, on his return to Almagro he was regarded as a traitor. Offended by this treatment, he joined the forces of De Castro, but after Almagro's defeat exerted his influence in the latter's favor. Then Idiaquez retired to Lima, but in 1549 went with Valdivia in his second expedition to Chili and in the campaigning of the south. He is supposed to have perished in the campaign against the Araucanians about 1550.