Duke of Cornwall's Light Infantry was created in 1881.
Yes he is the Duke of Rothesay and Cornwall
Gorlois
Henry the Duke of Cornwall was born at Richmond Palace in 1511.
Duke of Edinburgh, Duke of Kent, Duke of York, Duke of Cornwall, Duke of Norfolk plus many more.
The cast of Opening of the Australian Parliament by the Duke of Cornwall - 1901 includes: King George V as himself
The Regimental Cap Badge for the Duke of Cornwall Light Infantry Regiment was the shape of a Hunting Horn suspended by cords from a Crown and a scroll under the crown which read "CORNWALL". It was made of nickel(i.e. silver color metal).
Since the first duke of England was the Duke of Cornwall, the son of Edward III, 1337, I'm going to assume that the first Duchy would be the same, Duchy of Cornwall. The Duchy of Lancaster is held by the Soverign. in Lancaster the toast, "To the Queen, Duke of Lancaster" that's "Duke" not Duchess.
The cast of Arrival of the Duke and Duchess of Cornwall at Sydney - 1901 includes: King George V as himself Queen Mary as herself
The cast of Departure of Duke and Duchess of Cornwall for Australia - 1901 includes: Queen Alexandra as herself King Edward VII as himself
The cast of King and Duke of Cornwall Proceeding to Ophir - 1901 includes: King Edward VII as himself King George V as himself
The cast of Departure for Australia of the Duke and Duchess of Cornwall and York - 1901 includes: King George V as himself Queen Mary as herself