Empire) Duchy of Cornwall Duchy of Lancaster Duchy of Anjou Duchy of Aquitaine Duchy of Berry Duchy of Bourbon Duchy of Brittany Duchy of Burgundy Duchy of...

The Duchy of Cornwall (Cornish: Duketh Kernow) is one of two royal duchies in England, the other being the Duchy of Lancaster. The eldest son of the reigning...

The Duchy of Lancaster is an estate of the British sovereign. The estate has its origins in the lands held by the medieval Dukes of Lancaster, which came...

[ˈlʊksm̩bʊʁk] ; French: Luxembourg [lyksɑ̃buʁ] ), officially the Grand Duchy of Luxembourg, is a small landlocked country in Western Europe. It is bordered...

The Grand Duchy of Lithuania was a sovereign state in northeastern Europe that existed from the 13th century, succeeding the Kingdom of Lithuania, to...

A grand duchy is a country or territory whose official head of state or ruler is a monarch bearing the title of grand duke or grand duchess. Prior to...

Currently, there are two duchies in England; the royal Duchy of Lancaster and the royal Duchy of Cornwall. Unlike historic duchies in England, these are...

The Duchy of Warsaw (Polish: Księstwo Warszawskie; French: Duché de Varsovie; German: Herzogtum Warschau), also known as the Grand Duchy of Warsaw and...

The Duchy of Montferrat was a state located in Northern Italy. It was created out of what was left of the medieval March of Montferrat after the last...

stem duchy (German: Stammesherzogtum, from Stamm, meaning "tribe", in reference to the Franks, Saxons, Bavarians and Swabians) was a constituent duchy of...