Popular legend suggests that it was at a battle between the Picts and Angles in the East Lothian village of Athelstaneford in 823 that the flag of Scotland was conceived.
In the 19th century, the county is mentioned in the Gazetteer for Scotland as chiefly agricultural, with farming, fishing and coal-mining forming significant parts of the local economy.
Following the end of the Roman occupation of Britain, Lothian was populated by Brythonic-speaking Ancient Britons and formed part of the kingdom of the Gododdin, within the Hen Ogledd or Old North.
The earliest reference to the shire of Haddington, or Haddingtonshire, occurred in the 12th century, in two charters issued by King David.
Haddingtonshire lairds supported the English cause, including John Cockburn of Ormiston, Alexander Crichton of Brunstane, and Regent Arran demolished their houses.
Under the command of Sir John Cope, the British Army met with the Jacobites under Charles Edward Stuart at the Battle of Prestonpans in the west of the county in September 1745, with the Jacobite side gaining a significant victory before being defeated at the Battle of Culloden in April 1746.
[7] The government agreed and brought the change into effect as part of the East Lothian County Buildings Order Confirmation Act 1921, which received royal assent on 8 November 1921.
When further reforms in 1996 moved Scotland to a system of 32 unitary local authorities, the modern council area of East Lothian was created.
It has 40 miles (64 km) of coastline where the towns of Musselburgh, Prestonpans, Cockenzie and Port Seton, Longniddry, Gullane, North Berwick and Dunbar lie along the coast of the Firth of Forth.
To the south are the Lammermuir Hills along the boundary with Berwickshire; it is here that Meikle Says Law, the highest point in the county at 535 metres (1,755 ft), can be found.
The A1 road travels through East Lothian where it meets the Scottish Borders southbound and Edinburgh northbound.
The A1 throughout East Lothian is dual carriageway and major junctions include Dunbar, Haddington, Tranent, Prestonpans and Musselburgh.
[citation needed] Starting in Leith, the A199 road also travels through East Lothian beginning at Musselburgh and passing through Wallyford, Tranent, Macmerry and Haddington before joining the A1 in West Barns.
[2] The fastest growing district in East Lothian is the Tranent, Wallyford and Macmerry ward which is expected to see its population of just over 20,000 increase to just under 30,000 by 2026.
The other examples being Inverclyde, Moray, and Na h-Eileanan an Iar, East Lothian is one of the few UK Parliamentary Constituencies which fully covers the boundaries of its Council area.
Former UK Prime Minister Arthur Balfour was born on 25 July 1848 at Whittingehame House in what is now the Lothian East constituency.
Largest settlements by population: 21,100 11,910 10,460 10,360 10,270 7,840 5,370 3,370 2,810 2,340 In 1894, John Martine published Reminiscences and Notices of Ten Parishes of the County of Haddington.
The East Lothian News was first published in 1971, as part of Scottish County Press Group, with editorial offices in Dalkeith and printing at Bonnyrigg (both in Midlothian).