Abingdon (formerly known during the 10th century as Abbandune, and recorded in the Domesday Book as Abbendone) is a town in Oxfordshire, England, 80 km north-west of London. It was an important Saxon town where King Offa had a palace. In 1644 Sir Stephen Hawkins attacked the town, unsuccessfully and in 1645 prince Rupert also made an unsuccessful assault upon the town. In both battles the defenders executed every prisoner they took without trial, giving rise to the expression 'Abingdon Law'.