"Jack of Newbury" or John Winchcombe, also known as John Smallwood (c. 1489 −1557) was a leading English clothier from Newbury. He became a wealthy landowner, spending over £4,000 on the purchase of property in the 1540s, including the manors of Thatcham and Bucklebury in 1540, Farnborough (on the Berkshire Downs) in 1542, and Lockinge and Ginge in 1546.