Usually described as a yeoman, Comber may have made a living chiefly from the profits of landholding, although the value of his property is not known. He is first recorded in Hilary term 1446, as ‘formerly of Horsham’, when sued in the court of common pleas by George Stydolf for a debt of £20.
It would seem that by the time of his second Parliament Comber had become personally known to Horsham’s lord, the last Mowbray duke of Norfolk, for he was among a group of Mowbray retainers who in the late 1460s endeavoured to help the prior of Sele priory (of which the duke was the patron) out of his severe financial difficulties. The prior owed two citizens of London, Reynold and John Assh, the sum of £264 5s. 4d., which Comber, heading the signatories of a deed guaranteeing payment to settle the debt, was bound over to pay to the Asshes in May 1466. On his failure to pay on the appointed day the two creditors sued him in the common pleas in September 1467, their suit coming to pleadings in the following Hilary term and ending in Michaelmas term when Comber paid damages and costs. But a large part of the debt remained outstanding. In February 1469 he was party to an arrangement whereby he and others agreed to procure from Duke John a lease for ten-and-a-half years of the Sussex manor of Washington on behalf of the Asshes, who would in turn sub-let the manor to Comber and his associates for a rent of £20 p.a., in this way recovering the remainder of the sum still due. Yet as late as July 1472 they had still not received full satisfaction, and the sheriff of Sussex was sent writs to arrest Comber. The sheriff’s failure to respond that September resulted in a suit in the Exchequer against him.
During the later stages of his career Comber continued to live at Nuthurst, and to be called upon to act as a feoffee of land in the vicinity. One such commitment brought him into contact with the son and heir of (Sir) Roger Lewknor* in the early 1480s. He is last recorded in October 1486.