| Flag Illustration | 1) |
| Active | 1642-1645 |
| Country | England |
| Allegiance | Protestant |
| Royalist | |
| Conflicts | Irish Confederate War |
| First Civil War | |
| Type | Foot |
| Colonel | Lord Kerry |
| William St Leger | |
| Duke of York | |
| Area Raised | London |
| Coat Colour | White? |
| Flag Colour | Black and Red |
| Flag Design | Gyronny |
| Field Armies | Inchiquin 1642-3 |
| Oxford 1644-5 |
Later the Duke of York’s Regiment of Foot, led by Sir William St Leger
Regiment of foot raised by the Adventurers for service in Ireland, returning to England in 1643 to fight for the Royalists
Raised by the Merchant Adventurers of London, authorized by Parliament, for Lord Kerry for service in Ireland, they were led by their Lieutenant Colonel, William St Leger. They returned to England in 1643 joining Sir William Vavasour’s force opposing Massey at Gloucester. Joining the Oxford Army, they served on the 1644 campaigns and were destroyed at Naseby.
The regiment carried red and black flags of a gyronny pattern 3).
Coat colour in April 1644 deduced to be white by Peachey and Prince but not confirmed. The regiment were issued suits of clothes at Bristol, supplied by Thomas Bushell4).
On arrival in Munster the local commander Lord Inchquin complained that the regiment had been sent unarmed, their allocated weapons having been used instead to equip Parliament's army raised for the Civil War.
A list of the regiment's officers is also shown in An English Army for Ireland by Ian Ryder, Partizan Press.
Patrick Fitzmaurice, 19th Baron Kerry
Prince James, second son of King Charles I. Honorary colonel when the regiment returned to England
“Resolved, &c. That the Lord of Kerry shall have a Commission for the Raising and Transporting of…One thousand for his own Regiment…” 6)