The counts of Limburg were the original rulers of the Duchy of Limburg and rose to prominence when one of their house was appointed Duke of Lower Lorraine.

His younger brother Conrad was appointed Duke of Swabia and also elected King.

In 1115, Conrad was appointed Duke of Franconia by his maternal uncle Henry V, Holy Roman Emperor.

In England, the adult Erik (Giorgio Ardisson) is appointed Duke of Helford and leader of the English sea forces, replacing Sir Rutford.

After Simon's death during the siege (1218) and five more years of warfare, Raymond submitted and was appointed Duke of Narbonne in 1223.

He was appointed Duke of Athens and Neopatria in 1312 by his father at the request of the knights of the Catalan Company then in control of Athens.

Another Geoffrey Ridel (active between 1061 and 1084) was a supporter of Robert Guiscard and was appointed Duke of Gaeta.

He was appointed equerry to the Prince Ernest Augustus, Duke of Cumberland in 1800, and became a colonel in the army on 29 April 1802.

He was appointed Duke of Franconia by his uncle, Henry V, in 1115.

He paid homage to Henry II, to his son also called Henry and to his other son Richard the Lionheart newly appointed new Duke of Aquitaine.