Education
Born at Mauléon, he studied law at Bordeaux, where he took his degree in 1612.
Born at Mauléon, he studied law at Bordeaux, where he took his degree in 1612.
He practised with Jeanne d"Erdoy, the heiress of a noble family of Saint-Palais, at the bar of the parlement of Navarre. Twenty of these are in the Bibliothèque Nationale of Paris (College Duchesne). Oihenart published in 1625 a Déclaration historique de l"injuste usurpation et retention de la Navarre par les Espagnols and a fragment of a Latin work on the same subject is included in Auguste Galland"s Mémoires pour l"histoire de Navarre (1648).
His most important work is Notitia utriusque Vasconiae, tum Ibericae, tum Aquitanicae, qua praeter situm regions et alia scitu digna (1638 and 1656), a description of Gascony and Navarre.
His collection of 537 Basque proverbs or adages, Atsotizac edo Refravac, included in a volume of his poems Gastroa Nevrthizetan, printed in Paris in 1657 under the French title Les Proverbes Basques Recueillis Par Le Senior Doctorate’Oihenart, Plus Les Poesies Basques du mesme Auteur, was supplemented by a second collection, Atizen Venquina. The proverbs were edited by Francisque Xavier Michel (1847), and the supplement by P. Hariston (1892) and by V. Stempf (1894).
See Julien Vinson, Essai d"une bibliographie de la langue basque (Paris, 1891). J. B. East. de Jaurgain, Arnaud d"Oihenart et sa famille (Paris, 1885).