| Marquessate of Northampton | |
|---|---|
  Arms of Compton: Sable, a Lion passant guardant Or, between three Esquire's Helmets Argent. Crest: On a Mount, a Beacon proper, behind it a Riband inscribed with the words "NISI DOMINUS" (If not God, nothing). Supporters: Dexter: a Dragon Ermine, ducally gorged and chained Or. Sinister: A Unicorn Argent, armed maned hoofed and tufted Sable.[1] | |
| Creation date | 7 September 1812 |
| Creation | Second |
| Created by | The Prince Regent (acting on behalf of his father King George III) |
| Peerage | Peerage of the United Kingdom (second creation) |
| First holder | William Parr, 1st Marquess of Northampton (first creation) Charles Compton, 9th Earl of Northampton (second creation) |
| Present holder | Spencer Compton, 7th Marquess of Northampton (second creation) |
| Heir apparent | Daniel Compton, Earl Compton |
| Remainder to | Heirs male of the body, lawfully begotten |
| Subsidiary titles | Earl of Northampton (fourth creation) Earl Compton Baron Wilmington |
| Status | Extinct (first creation) Extant (second creation) |
| Extinction date | 28 October 1571 (first creation) |
| Seat(s) | Castle Ashby House Compton Wynyates |
| Motto | JE NE CHERCHE QU'UN (I seek but one)[2] |
Marquess of Northampton is a title that has been created twice, firstly in the Peerage of England (1547), then secondly in the Peerage of the United Kingdom (1812). The current holder of this title is Spencer Compton, 7th Marquess of Northampton.