After the Braganza assencion to the throne, the title was continued as the title of the heir of the Duke of Braganza, alongside the title of Prince of Beira.
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After the Braganzas ascended to the Portuguese throne, the title of Duke of Barcelos was among those used by the Portuguese Prince of Beira.
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In the early 1620s he was resident at the ducal household of Vila Viçosa, where he was befriended by the Duke of Barcelos—later to become King John IV.