or AZPILCUETA, MARTIN DE, commonly called the Doctor of Navarre, was descended of a noble family, and born on the 13th of December 1491, at Varasayn, near Pamplona. He studied classics, natural and moral philosophy, and divinity, at Alcalá in New Castile. After teaching with applause at Toulouse and Cahors, he was professor of canon law at Salamanca for 14 years, and afterwards at Coimbra for 20 years. Pope Pius V. made him assistant to Cardinal Francis Aciat, his vice-penitentiary; and Gregory XIII. never passed his door without calling for him, and stopped sometimes a whole hour to talk with him in the street. He was consulted as an oracle; and his name became so famous, that even in his lifetime the highest encumbrance on a learned man was to call him a Navarrus. He died on the 21st June 1586, having by temperance prolonged his life to the age of 94. He wrote a number of treatises on morality, law, &c. These were published in 3 vols. folio, Rome, 1589; and in 6 vols. 4to, Venice, 1602.