Earldom of Norfolk
- Ruling Houses
-
House of Bigod
-
House of Hugh Bigod
-
House of Roger Bigod
-
House of Mowbray
-
House of Mowbray
(as Dukes of Norfolk)
House of Bigod
House of Hugh Bigod
House of Roger Bigod
House of Mowbray
House of Mowbray
(as Dukes of Norfolk)