Originating in Orduña (Vizcaya) in the Basque Country, it is part of the troupe of Pizarro who makes prisoner the Inca Atahualpa at Cajamarca. Writer and an accountant, he benefited from a full share of gold and silver in the distribution of the ransom of atahualpa (4,440 pesos of gold and 182 marcs of silver).
He is one of the first three spaniards with Martin Bueno and Pedro Moguer to see the city of Cusco, the capital of the Inca empire.
He is the author of two chronics unfortunately missing on the conquest of Peru, and on the road between Cajamarca and Cusco.
He is installed in Cusco in 1534, but returned to Spain in 1535, in his natal Basque Country, where it has its trace in 1538 on the occasion of a testimony he gives with regard to the legacy of Juan of Beranga.