Fulco gained the title of Duke when, in August 1923, his father died.

He has held the title of Duke of Kent since 1942.

He held the title of Duke of Cambridge from 1801 until his death.

He succeeded to his father's title of Duke of Hamilton in 1712.

He was also created the greater title of Duke of Yu.

The title of "Duke of Ireland" was never used again.

He held the title of Duke of Kent from 1934 until his death in 1942.

No matter what happens, the title of Duke will fall on Jamie's shoulders at his father's death.

He retained the title of High Duke, but was forced to give up part of his powers.

Ferrante's descendants ruled the country until 1746, being raised to the title of Duke in 1621.