Question: Which is the closest county near the New Forest where Ocknell Plain can be found?

Context articles: New Forest Tour
Southampton
Ashurst, Hampshire
Sway, Hampshire
Balmer Lawn
Ocknell Plain
Gerald William Lascelles
F. E. Kenchington
Sopley
New Forest Show

The New Forest Tour is an open-top bus service in the New Forest, running three circular routes around Lyndhurst, Brockenhurst, Lymington, Beaulieu and Exbury Gardens, Ringwood, Fordingbridge, Cadnam and Ashurst and New Milton, Milford on sea, and Burley .
 It is run by Bluestar and Wilts & Dorset in partnership with Hampshire County Council, New Forest District Council and the New Forest National Park Authority.
Southampton( ) is the largest city in the ceremonial county of Hampshire, England.
 It is 75 mi south-west of London and 19 mi north-west of Portsmouth.
 Southampton is a major port and the closest city to the New Forest.
 It lies at the northernmost point of Southampton Water at the confluence of the Rivers Test and Itchen, with the River Hamble joining to the south of the urban area.
 The city, which is a unitary authority, has an estimated population of 253,651.
 The city's name is sometimes abbreviated in writing to "So'ton" or "Soton", and a resident of Southampton is called a .
Ashurst is a village in the New Forest district of Hampshire, England, which together with Colbury hamlet makes the parish of Ashurst and Colbury.
 Ashurst is on the A35 road near the Southampton conurbation.
 According to the 2001 census the parish had a population of 2,011, increasing to 2,093 at the 2011 Census.
 The parish is on the edge of the designated New Forest National Park area.
 The village has a campsite, some shops and a railway station.
 The parish is bounded to the west by Netley Marsh parish and the Bartley Water, to the north by the A326 road and Totton and Eling, and to the south by Denny Lodge parish in the New Forest.
Sway is a village and Civil parish in Hampshire in the New Forest national park in England.
 The civil parish was formed in 1879, when lands were taken from the extensive parish of Boldre.
 The village has shops and pubs, and a railway station on the main line from Weymouth and Bournemouth to Southampton and London Waterloo.
 Sway is on the southern edge of the woodland and heathland of the New Forest.
 Much of the children's novel "The Children of the New Forest" is set in the countryside surrounding Sway.
Balmer Lawn is the name of a large New Forest Lawn located in an amphitheatre of woodland in the New Forest National Park in Hampshire, England.
 It is just north of the village of Brockenhurst.
The lawn comprises about 500 acre of open low land grazing frequented by Forest stock.
 The name of the area comes from a distortion of the historical name Palmers Water - reference “Comyn’s New Forest” of 1817.
 Palmers Water was in fact a small settlement which has long since disappeared but was located to east of the ford on the Brockenhurst to Beaulieu road.
 The water being the Lymington River which separates Brockenhurst and the small settlement of Balmerlawn on the south side of the grazing lawn.
 The lawn of course remained and over time Palmers became Balmer, perhaps aided by the local dialect.
Ocknell Plain can be found in the New Forest near Southampton, England.
The Honourable Gerald William Lascelles C.B. (born 26 October 1849, died 11 February 1928) was an author and Deputy Surveyor of the New Forest from 1880 to 1914, and writer of an important book on the area, "Thirty Five Years in the New Forest".
 He was the third son of Henry Lascelles, 4th Earl of Harewood and Lady Elizabeth Joanna de Burgh, and graduated from Cambridge University with a Bachelor of Arts.
 On 9 February 1875 he married Constance Augusta Mary FitzClarence Phillipson, the daughter of John Burton Phillipson, and had four children with her: Gerald Hubert Lascelles (23 Apr 1876 to 13 Jul 1928), John Beilby Lascelles (19 Feb 1884 to 13 Nov 1907), Richard Lascelles (30 Nov 1887 to 30 Nov 1887), and Cynthia Rachael Lascelles (29 Aug 1885 to 6 Sep 1961), who married George Wentworth Warwick Bampfylde, 4th Baron Poltimore.
 He was invested as a Companion of The Most Honourable Order of the Bath (C.B.) in 1914.
 Alongside arguably his most famous work on the New Forest, he authored "Sport in the New Forest" and "Forestry and the New Forest" in the Hampshire volumes of the Victoria County History, "The Art of Falconry", and numerous other (mainly sporting) publications.
Dr F. E. Kenchington was an agriculturist and author, best known for "The Commoners' New Forest", one of the core texts on the New Forest area of South and South West England, and was an Associate of the "Imperial College of Tropical Agriculture", Trinidad.
 His family were local to the district, and he moved there during World War II as part of the County War Agricultural Committee.
 The focus of his work was on the agricultural cultivation of the New Forest area with the aim of reducing wartime dependency on imported food.
 Though the book was completed in 1942, it wasn't published until 1944 (with second and third editions appearing in 1945 and 1949, respectively) by Hutchinson & Co. Ltd.
 Prior to the war, he had become known for research on the Nile Perch in Sudan, published in the Proceedings of the Zoological Society of London in 1939.
Sopley is a village and civil parish situated in the New Forest National Park of Hampshire, England.
 It lies on the old main road from Christchurch to Ringwood, on the east bank of the River Avon.
 The Parish extends east as far as Thorny Hill and borders the parishes of Bransgore and Burton to the south and west respectively.
 It includes the hamlets of Shirley, Avon and Ripley.
 The area is mainly rural with less than 300 dwellings.
 The village is situated on the fringes of the New Forest, just outside the New Forest National Park but within the perambulation boundary of the forest.
 Most of the buildings date back to the 19th century but there are more modern houses to the north.
 It is also home to Moorlands College, one of the largest evangelical theological seminaries in the country.
 The college was built on the site of the old manor house which was demolished in 1988.
The New Forest and Hampshire County Show, or more commonly known as the New Forest Show, is an annual agricultural show event held for three days at the end of July in New Park, near Brockenhurst in Hampshire, southern England, UK.
 The first New Forest Show was held in 1921, and in 2006, it celebrated its 80th show.