John Northampton (also known as John Comberton) (died 1398) was a reformist Lord Mayor of London in 1381 and 1382, during dissension in favour of reform of its Common Council in the early years of Richard II's reign. When the oligarchic leaders of London were able to engineer the overthrow of his faction, even the book of records of reform legislation was burned, known as the Jubilee Book. The radical movements' mob politics heightened public reluctance to permit people's engagement in politics.
He had also served as Sheriff of London in 1376-77.[1]