In the course of extensive researches in which I have been engaged for some years on the subject of the history of the Rumbold family during the seventeenth century, and more especially at the period immediately preceding the Restoration, I came across a paper in the British Museum which has never, as far as I know, been made public, and is, perhaps, not unworthy to find a place among the Transactions of the Royal Historical Society. The curious document in question is headed A Particular of the Services performed by me Henry Rumbold for His Majesty.