 In 1637, the Basque Arnauld de Oihenart, in his "Notitia utriusque Vasconie", concluded that Charles's Cross had occupied a site that was then under the chapel of San Salvador de Ibañeta.The Béarnais Pierre de Marca followed in him in this identification.Around the turn of the twentieth century, two canons of Bayonne, Victor Pierre Dubarat (1849–1912) and Jean-Baptiste Daranatz (1869–1937), wrote that in the twelfth century the site of San Salvador de Ibañeta had been covered by nothing but Charles's Cross and the thousands of other crosses placed there by pilgrims on the Way of Saint James.