Frankpledge was a system of joint suretyship common in England throughout the Early Middle Ages and High Middle Ages. The essential characteristic was the compulsory sharing of responsibility among persons connected in tithings. This unit, under a leader known as the chief-pledge or tithing-man, was then responsible for producing any man of that tithing suspected of a crime. If the man did not appear, the entire group could be fined. While women, clergy and the richer freemen were exempt, otherwise all men over 12 years of age were organised in the system for mutual surety.