| Seymour | |
|---|---|
 Coat of arms of the Seymour Dukes of Somerset | |
| Country | Kingdom of England United Kingdom |
| Founded | 11th century |
| Founder | Wido de St Maur |
| Current head | John Seymour, 19th Duke of Somerset |
| Titles |
Hertford branch: |
Seymour, Semel or St. Maur, is the name of an English family in which several titles of nobility have from time to time been created, and of which the Duke of Somerset is the head.