prominent share of the subsequent commissioners' work of evaluating and allotting the lands among the claimants, for which he was compensated by assigning him 6,000 acres (24 km2) of land, and permission to buy £2,000 worth of debentures. As a result of the re-distribution, approx 7,500 New Model Army veterans settled in Ireland, in what became known as the Cromwellian Plantation. Allegations of fraud In the 1650s, Petty was charged with fraud in the survey, by several members of Parliament, particularly Sir H. Sankey – illustrating that this survey involved fortunes for speculators and creditors of the Cromwell government. The allocations of land to Petty by the army in lieu of payment were alleged to be over-stated. His work in allocating the lands also made him open to attack and bribery by those seeking allocation of the limited lands. Following investigations, he was acquitted, but a dissenting report accused him of magnifying the debt due to him by the army, of charging the army with debts not really due by them, of reserving for himself portions of choice lands. Although never convicted of mis-appropriation, charges related to the Irish survey pursued Petty for a number of years. In 1659, Petty published a pamphlet, Proceedings between Sankey and Petty, in which he tried to refute the allegations of fraud by Sankey. This pamphlet was followed, in 1660, by an essay, Reflections upon some persons and things in Ireland, where he explained that he had defected from the ranks of scientists to do the survey "to demonstrate to the public the utility of a scientific training". He further explained his unpopularity by the need to attack him rather than directly attack his leader, Henry Cromwell. Impact on Petty Petty gained fame for his Survey of Ireland. It was the first British imperial survey of an entire conquered nation and Petty was given great credit as a pioneer by the Royal Society. The results became part of his life's work. Petty also undertook the first complete mapping of Ireland in 1673 and the first census of Ireland, for the year 1659. Sir William Petty further used the Down Survey, supplemented with other materials from surveys in 1636–40 and 1656–9, as research towards his 1685 atlas publication, Hiberniae Delineatio, the first printed atlas of Ireland, which used reduced edited versions of his maps. The survey brought him considerable personal profit. As his reward, he