Viscount Valentia was created in 1620.
Valentia - Roman Britain - was created in 369.
Valentia Young Islanders was created in 1905.
Viscount Exmouth was created in 1816.
Viscount Palmerston was created in 1723.
Viscount Bangor was created in 1781.
Viscount Scarsdale was created in 1636.
Viscount Sidmouth was created in 1805.
Viscount Doneraile was created in 1703.
Viscount Hawarden was created in 1705.
Viscount Hereford was created in 1611.
The Cloven Viscount was created in 1952.
The Viscount of Adrilankha was created in 2003.