| Active | 1642 to 1644 |
| Country | England |
| Allegiance | Parliamentarian |
| Conflicts | First Civil War |
| Type | Horse |
| Colonel | Lord Willoughby |
| Area Raised | Lincolnshire |
| Flag Colour | Various |
| Flag Design | See below |
| Field Armies | Meldrum 1644 |
Parliamentarian regiment from Lincolnshire fighting alongside Cromwell in 1643 but reduced after the Battle of Newark in 1644
Lord Willoughby's cornet was plain black with a foliated pattern in dark grey1).
However, according to Blount: The Lord Willoughby of Parham sem'd not to ayme at the King but his evil counsellours, when for his devise he depainted the sun enveloped with clouds, and the motto, NON SOLEM, SED NUBILOS2).
Captain Massingberg's cornet was blue with a blue and white fringe with a knight on a white horse, clouds in the top left bearing the motto DEVS and a scroll showing OCCULI NOSTRI DE FIXI SUNT INTE3).
Wray served as a gentleman volunteer in Earl of Essex’s Lifeguard Troop of Horse then likely served as a captain in Willoughby's regiment by January 1643. According to Blount: Sir Christopher Wray figured a Hand with drawn Sword, and the motto in English, THAT WAR IS IUST, WHICH IS NECESSARY4).
A list of the regiment’s officers is shown in Laurence Spring’s Regiments of the Eastern Association5)
Francis, Lord Willoughby of Parham was blamed for the Parliamentary defeat at Newark.