Duke of Porto was an aristocratic Portuguese

Portugal

Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 title with the status of royal dukedom, associated with the Portuguese royal house, created in 1833, by Queen Maria II of Portugal for herself, in honor of the city of Oporto, due its loyalty to the liberal cause she represented.

From then on, this title became associated with the second male child of the monarch.

The dukes of Porto

1. Queen Maria II of Portugal (1819-1853)
2. King Luís I of Portugal
   Luís I of Portugal
   |-...
   
    (1838-1889), the second male child of Queen Maria II of Portugal
3. Infante Afonso of Braganza
   Infante Afonso, Duke of Porto
   Afonso Henriques, Prince Royal of Portugal was a Portuguese prince of the House of Braganza, the son of King Luis I of Portugal and his wife, Maria Pia of Savoy.-Biography:...
   
    (1865-1920), the second male child of King Luís I of Portugal
   Luís I of Portugal
   |-...
   
   
4. Infante Dinis, Duke of Porto
   Infante Dinis, Duke of Porto
   The Infante Dinis, Duke of Porto is a Portuguese infante and the second son and youngest child of Duarte Pio, Duke of Braganza and his wife Isabel de Herédia...
   
    (b.1999), the second male child of Duarte Pio (current Duke of Braganza)
   Duarte Pio, Duke of Braganza
   Dom Duarte Pio, Duke of Braganza , is the 24th Duke of Braganza and a pretender to the throne of Portugal.-Birth and education:...
   
   

External links

• Genealogy of the Dukes of Porto - Portuguese Genealogical site