Question: Ivinghoe Beacon is close to the estate that is in what English town?

Context paragraphs:
Ilford, New South Wales: Ilford is a small town in New South Wales, Australia, in the Mid-Western Regional Council.  It is named after the small English town of Ilford (then in Essex, now in east London), where the founders of this town came from.  It is situated around 220 km north west of Sydney.  It is located on the Castlereagh Highway, which is locally referred to as "Sydney Road".  The Bathurst-Ilford Road (MR 54) (which comes from Bathurst and skirts past Sofala) joins the Castlereagh Highway on the northern outskirts of town and the Bylong Valley Way to the upper Hunter Region via Kandos, Rylstone and Bylong joins the Castlereagh Highway 2 km north of town.

The Ridgeway: The Ridgeway is a ridgeway or ancient trackway described as Britain's oldest road.  The section clearly identified as an ancient trackway extends from Wiltshire along the chalk ridge of the Berkshire Downs to the River Thames at the Goring Gap, part of the Icknield Way which ran, not always on the ridge, from Salisbury Plain to East Anglia.  The route was adapted and extended as a National Trail, created in 1972.  The Ridgeway National Trail follows the ancient Ridgeway from Overton Hill, near Avebury, to Streatley, then follows footpaths and parts of the ancient Icknield Way through the Chiltern Hills to Ivinghoe Beacon in Buckinghamshire.  The National Trail is 87 mi long.

Ivinghoe Beacon: Ivinghoe Beacon is a prominent hill and landmark in the Chiltern Hills, standing 233 m (757 ft) above sea level.  It is situated close to the village of Ivinghoe in Buckinghamshire, the Ashridge Estate, and the villages of Aldbury and Little Gaddesden in Hertfordshire and is managed and owned by the National Trust.  Ivinghoe Beacon is part of the Ivinghoe Hills Site of Special Scientific Interest.  It lies between the towns of Dunstable in Bedfordshire, and Berkhamsted and Tring in Hertfordshire.  It is the starting point of the Icknield Way to the east, and the Ridgeway long-distance path to the west.

Ashridge: Ashridge is a country estate and stately home in Hertfordshire, England in the United Kingdom; part of the land stretches into Buckinghamshire and it is close to the Bedfordshire border.  It is situated in the Chiltern Hills, an Area of Outstanding Natural Beauty, about 2 mile north of Berkhamsted and 20 mile northwest of London.  Surrounding villages include Aldbury, Pitstone, Ivinghoe, Little Gaddesden, Nettleden, Frithsden and Potten End.

Bridestowe Lavender Estate: Bridestowe Lavender Estate is a lavender farm located in Nabowla, Tasmania, Australia.  The farm is believed to be the largest commercial plantation of Lavandula angustifolia in the world.  Bridestowe was established in 1922 by Charles Denny, and advanced by his son, Tim Denny It is named in honour of the birthplace of Charles Denny's wife, the English town of Bridestowe.

St. George's, Bermuda: St. George's (formally, the Town of St. George, or St. George's Town), located on the island and within the parish of the same names, settled in 1612, was the first permanent English settlement on the islands of Bermuda.  It is often described as the third successful English settlement in the Americas, after St. John's, Newfoundland, and Jamestown, Virginia and the oldest continuously-inhabited English town in the New World, since the other two settlements were seasonal for a number of years.

Beacon Reservoir (Dutchess County, New York): Beacon Reservoir supplies water to the city of the same name in Dutchess County, New York, United States.  It is located at 1,285 feet (392 m) above sea level in a hollow between Beacon Mountain and Scofield Ridge, in the neighboring Town of Fishkill, very close to the Putnam County line.  It was created in 1922 by damming Dry Brook, a tributary of Fishkill Creek.

St Leonards, Dunedin: St Leonards is a suburb of the New Zealand city of Dunedin.  It is located close to the northern shore of the Otago Harbour and on the hilly slopes above the harbour.  St Leonards is 8.5 km northeast of Dunedin's city centre, between the small settlement of Burkes and Sawyers Bay.  St Leonards was named by early settler David Carey for the birthplace of his wife, the English town of St Leonards-on-Sea, on the Sussex coast.

Mukono Town: Mukono Town is a municipality in Mukono District in the Central Region of Uganda.  The town is administered by the Mukono Town Council.  The district headquarters are located in this town.  Mukono Town has links to the English town Guildford.

Ivinghoe Hills: Ivinghoe Hills is a 210.4 hectare Site of Special Scientific Interest in Ivinghoe in Buckinghamshire, and part of the Chilterns Area of Outstanding Natural Beauty.  It is listed in "A Nature Conservation Review".  The Ridgeway long-distance footpath ends and the Icknield Way Path starts in the site on Ivinghoe Beacon.  An Iron Age fort on Ivinghoe Beacon and a tumulus on Gallows Hill are Scheduled Monuments.  The site is part of the National Trust's Ashridge Estate, apart from a small area which belongs to Buckinghamshire County Council.

Supporting paragraphs: Ivinghoe Beacon Ashridge
Answer: Hertfordshire