Gerrard Winstanley (1609 - 10 September 1676) was an English Protestant religious reformer and political activist during the Protectorate of Oliver Cromwell. Winstanley was one of the founders of the English group known as the True Levellers for their beliefs, based upon Christian communism, and as the Diggers for their actions because they took over public lands and dug them over to plant crops.