Abjuration of the realm was a type of abjuration in ancient English law that was a renunciation of citizenship, a type of self-imposed exile. The person taking the oath swore never to return to the kingdom unless by permission. This was often taken by fugitives who had taken sanctuary:
In England, an oath of abjuration was taken by members of Parliament, clergy, and laymen, pledging to support the current British monarch and repudiated the right of the Stuarts and other claimants to the throne. This oath was imposed under William III, George I and George III. It was superseded by the oath of allegiance.
Another famous abjuration was brought about by the Plakkaat van Verlatinghe of July 26, 1581, the formal declaration of independence of the northern Low Countries from the Spanish king, Philip II. This oath was the climax of the Eighty Years' War (Dutch Revolt).