In its 1202 foundation charter, Notre-Dame de Beauport (O.Praem.) was granted the right of patronage of nineteen churches spread over the dioceses of Dol, Saint-Brieuc, Tréguier, and Lincoln. The number of churches controlled by Beauport eventually increased to twenty-eight. The Rolls and Registers of the bishops of Lincoln give evidence that the jus patronatus of the Abbot of Beauport represented by the Prior of Ravendale was generally respected. Surprisingly violent conflicts - mostly arbitrated by popes or their legates - arose, however, between the Abbey and the Breton bishops about the apppointment of incumbents. This article suggests that the cultural and linguistic divide between the local bilingual (Romance/ Breton) aristocracy and the abbots of Beauport, who were usually of Norman origin, might provide an explanation for such clashes.