D. Infante Dinis Duke of Porto (born 25 November 1999) is an Infante of Portugal as a member of the Portuguese Royal Family. The third child of Duarte Pio Duke of Braganza the current pretender to the defunct throne of Portugal and Isabel Castro Curvelo de Herédia the Duke of Porto is second in the Line of succession to the former Portuguese throne after his elder brother Afonso Prince of Beira.