John came from a Sussex family, and was probably related to William Furby, who had been a mainpernor and attorney for Robert, Lord Poynings, one of the county’s leading magnates, in the early years of the century.
During the 1450s Furby was engaged in an acrimonious dispute with members of the family of Bust, concerning ownership of a messuage and some 200 acres of land in Ringmer and Cliffe near Lewes. In Michaelmas term 1453 he appeared in person in the King’s bench to plead a bill against William Bust, then in the custody of the marshal, alleging that he had taken 62 of his cattle at Ringmer, and claiming damages of 40 marks. Bust retaliated with charges of his own, and as Furby was asserted to be ‘a man disposed to breke the pease’, who ‘dailly troubleth and debateth with his neighbours and with force of armes’ he was required to provide sureties for his good behaviour. Nevertheless, as Bust demonstrated in November 1455 in a petition addressed to the chancellor, Archbishop Bourgchier (who had a personal interest in the matter as lord of the land in question), the men Furby produced as his sureties were not worth 20s. p.a., let alone the £20 they were bound in, and so when Furby entered the disputed property Bust could not take action against them. Furby replied that at the time the bonds were sealed his mainpernors had been sufficient, and that his opponent was acting purely out of malice and for vengeance. Eventually both parties were bound in £40 to submit to arbitration. It would seem that both had a valid claim to the property, for although under the terms of the award made by Richard Jay* and other arbitrators on 21 Apr. 1458 Furby had to relinquish his title to the estate he was nevertheless to be compensated with the sum of £24 and an annual rent of £6 for life.
By this date Furby had moved away from the Sussex coast. In a pardon granted him on 25 Nov. that same year he was called ‘of Ifield, gentleman’.
