| Active | 1643 to 1645 |
| Country | England |
| Allegiance | Royalist |
| Conflicts | First Civil War |
| Type | Horse |
| Colonel | Sir William Mason |
| Area Raised | |
| Flag Colour | |
| Flag Design | |
| Field Armies | Newcastle 1644 |
| Langdale 1645 | |
Royalist regiment of horse serving in the Marquis of Newcastle’s army in 1644 then with Langdale’s Northern Horse
A barrister from Norfolk, he raised a force from the Inns of Court to guard the King's person in January 1642 and aided Charles in the attempt to seize the five members. In 1643 he was commissioned Colonel in Newcastle's army1).