Duchy of Porto
Duke of Porto is a Portuguese nobility title . It was created in 1833 by Queen Maria II of Portugal for their own use.
Dukes of Porto
- Queen Maria II of Portugal (1819-1853)
- King Ludwig I of Portugal (1838-1889)
- Infant Alfons Heinrich von Braganza (1865–1920)
- Infant Dinis of Santa Maria (* 1999), son of Duarte Pio, Duke of Bragança