Described as ‘of Cambridge’ in 1369, Marshall was then pardoned his outlawry in the London court of husting for not appearing before the justices to answer John Colman of London, cutler, concerning an account due from when Marshall had been his receiver. In 1380 he appeared as a juror at inquisitions held in Cambridge and Thriplow.
Marshall owned a number of properties in Cambridge and the immediate neighbourhood. In 1376 he and others had conveyed to John Payn I of Swaffham 12 acres in the fields of Barnwell, of which they had previously been enfeoffed by Alice Sleford. He was among those who received in November 1388 a royal licence to endow the nunnery of St. Radegund with messuages, shops, land and a rent in Cambridge, worth £2 14s.10d. a year. The priory also benefited from his will (which has not survived), for he directed that his lands in Cambridge and Barnwell be sold and the proceeds applied to various charitable uses, and to this end in 1407 his executors conveyed 14 acres to John Bilney I and others, by whom they were immediately granted to the nuns.
