* Earl of Hertford (created 1537, forfeit 1552; and created 1559, extinct 1750)
* Marquess of Hertford (created 1640, extinct 1675)
* Baron Seymour of Trowbridge (created 1641, became a subsidiary title 1675, extinct 1750)
* Baron Percy (4th creation 1722, separated 1750)
* Earl of Egremont and Baron Cockermouth