Because of the creation of the New Forest by William the Conqueror for his hunting preserve, three Yaldhurst hides had become part of the Forest such that only two remained as meadow (presumably farmed). Nobody knows the site of the medieval settlement of Yaldhurst but today the name is preserved in the former farmhouse of Yaldhurst (which is a listed building) and the lane leading to it from Pennington Common. Pennington is now a separate ward within the New Forest district of Hampshire, but it was for centuries a separate manor. The manor is recorded as Penyton in the 12th century, and as Penington in 1272. Similar place names appear across Britain following the Norman Conquest of 1066. The meaning is understood as a farmstead (or settlement/enclosure), i.e. a "Tun", that paid a penny's rent. The manor of Pennington was held in the 13th century by the de Clares, whose descendants continued to be overlords till it passed to the Crown following the execution of the Earl of Salisbury in 1499. John de Acton is the first recorded knight to have held Pennington for a knight's fee from the de Clare's. John de Acton was from Iron Acton in Gloucestershire, which was a manor (now also a village) that he already held. At the beginning of the 14th century, John de Acton split the estate into three parts, conveying two of the parts to John Neyrnoit or Nervett, and keeping one for himself. John Nervett soon re-granted one of the parts back to John de Acton, but henceforth, the estate was generally divided into thirds. That which John Nervett owned became known, from the 16th century onwards, as the manor of Pennington Narvett. A Milford and Pennington Parish Council was created in 1894 and a separate Pennington Parish Council in 1911. In 1932, the separate Pennington Parish was absorbed by Lymington Borough. Lymington Borough was subsequently abolished on 1 April 1974 under the terms of the Local Government Act 1972, becoming an unparished area in the district of New Forest, with Charter Trustees. The area was subsequently divided into the four civil parishes of New Milton, Lymington and Pennington, Milford-on-Sea and Hordle, whereupon Lymington and Pennington Town Council was formed. With the establishment of the New Forest National Park Authority in March 2005, much of Pennington (all of Pennington Common and Pennington Marshes) falls under the planning and land control of the Authority.