Colonel Robert Mainwaring's Regiment of Horse

Parliamentarian cavalry Regiment forming part of the London Brigade serving in the Midlands.

• 8th September: Parliament orders 500 horse and 500 Dragoons raised to form the London Brigade
• 10th October: London Brigade at Northampton
• 22nd October: Brigade reaches Nottinghamshire
• 3rd November: Storming of Shelford House
• 5th November: London Brigade sent to aid Brereton. However with the immediate danger having past is redirected to Market Harborough
• 21st November: Brigade at St Albans heading back to London claiming that the Parliamentry ordinance only covered two months service.
• 27th November: Ordered to join Col. Bulstrode covering Royalist advance towards Eastern Association
• 2nd December: Ordered to join Col. Whalley around Oxford.

Formed the London Brigade together with Col. William Webb’s Dragoons.

Mainwaring previously served as a Captain in the Green Regiment of Foot of the London Trained Bands and as Major to Colonel Edmund Harvey’s Regiment of London Horse. He died in 1652.