The title of Marquess of Northampton was created in the Peerage of the United Kingdom in 1812 for the Earl of Northampton. An earlier Marquess of Northampton was William Parr, brother of Queen Catherine Parr, who was created Marquess by Edward VI in the Peerage of England, lost the title under Mary, and was granted a new creation of the title by Elizabeth, again in the Peerage of England.
The present (Compton) Marquess holds the subsidiary titles of Earl of Northampton (1618), Earl Compton (1812), and Baron Wilmington (1812), the first in the Peerage of England, the latter two in the Peerage of the U.K.
Marquesses of Northampton, First Creation(1547)
- William Parr, 1st Marquess of Northampton (1513-1571) (forfeit 1553)
Marquesses of Northampton, Second Creation(1559)
- William Parr, 1st Marquess of Northampton (1513-1571)
Marquesses of Northampton, Third Creation (1812)
- Charles Compton, 1st Marquess of Northampton (1760-1828)
- Spencer Joshua Alwyne Compton, 2nd Marquess of Northampton (1790-1851)
- Charles Douglas Compton, 3rd Marquess of Northampton (1816-1877)
- William Compton, 4th Marquess of Northampton (1818-1897)
- William George Spencer Scott Compton, 5th Marquess of Northampton (1851-1913)
- William Bingham Compton, 6th Marquess of Northampton (1885-1978)
- Spencer Douglas David Compton, 7th Marquess of Northampton (b. 1946)
