Grygge was almost certainly a local man and the son of a namesake who served on a jury in Dover in 1402 and who eight years later was the plaintiff in a plea of debt before the mayor. That older Richard Grygge, a skinner, was among the Portsmen of Dover who secured exemption from the parliamentary subsidy in the Kentish hundred of Bewsborough in 1416,
Grygge, described in a royal pardon as a merchant, taverner and vintner, was regularly assessed for the maltolt as a wine merchant, and made his living trading in this commodity.
Early in his career, Grygge served as the mayor of Dover’s serjeant, otherwise known as the common serjeant, for which he received an annual fee of 20s.
A few months after the dissolution, on 8 Sept. 1451, Grygge was elected to the first of two consecutive terms as mayor of Dover. According to one account, he had actually become mayor earlier in the year on Gore’s resignation,
Grygge’s personal connexions sometimes led to litigation. This was the case with his role as feoffee of property in Dover previously belonging to Alice Field, which ended in acrimony when the parties had to submit to the arbitration of a panel of local men; and his nomination as a trustee by Walter Stratton* and his wife of the manor of Northcourt in Hougham led to his summons to appear in Chancery, sometime between July 1452 and March 1454 after he refused to recognize the sale of the manor by one of Stratton’s sons to the Nottinghamshire merchant, Thomas Thurland*, and deliver seisin to him.
Grygge is last recorded, in July 1460, attending a meeting of the Brodhull. The identity of his heir is not known.
