In English admiralty law, piracy was classified as petty treason during the medieval period, and offenders were accordingly liable to be hanged, drawn and quartered on conviction. Piracy was redefined as a felony during the reign of Henry VIII. In either case, piracy cases were cognizable in the courts of the Lord High Admiral. English judges in admiralty courts and vice admiralty courts emphasized that "neither Faith nor Oath is to be kept" with pirates; i.e. contracts with pirates and oaths sworn to them were not legally binding. Pirates were legally subject to summary execution by their captors if captured in battle. In practice, instances of summary justice and annulment of oaths and contracts involving pirates do not appear to have been common.