Peter de Heyno was the Lord of Stenbury, Isle of Wight under Edward III.Parishes - Godshill | British History Online
In 1377 a raiding force of French and Castilians invaded the Isle of Wight and burnt Yarmouth and Newtown which he had to defend.A new, correct, and much-improved history of the Isle of Wight They laid siege to Carisbrooke Castle during which Peter de Heyno killed their leader with an arrow from his "silver bow" fired through a loophole in the battlements known as "De Heyno's Loop". The French were defeated in a sally by the defenders led by the commander Sir Hugh Tyrell and withdrew after payment of a bribe.
References
Sources Adrian Searle. Walking Isle of Wight History, Dovecote Press