Arthur Mainwaring Forest. In 1641 the forest was the scene of disorder and poaching of the deer, and he recommended firm action around Egham, which was however thwarted by local sympathies. He had objected at the beginning of the reign of Charles I to the East India Company's gunpowder mills on the edge of Windsor Forest; later, in 1635, he was himself in the gunpowder business with Andrew Pitcairn. Arthur Mainwaring Sir Arthur Mainwaring (c. 1580 – 1648) was an English politician who sat in the House of Commons from 1624 to 1626. Mainwaring was the eldest son of Sir George Mainwaring
William Mainwaring caused some amusement when they appealed to Labour to withdraw their candidate to stop splitting the working-class vote. Mainwaring succeeded in increasing his majority to 8,433. In the new Parliament, Mainwaring won sixth place on the ballot to introduce a Private Member's Bill and chose to try to make employers liable for injuries to workmen caused by the negligence of fellow workmen. When debated, a Conservative MP moved to reject the Bill, and the Government declared their opposition; the Bill was defeated by 146 to 85. In the next session, Mainwaring won again, this time in first place; he introduced