A thousand Armagh acres for a Haddington family
The 1610 grant
Henry Acheson — a Scottish undertaker from Gosford, Haddingtonshire — got a 1,000-acre proportion in the Plantation of Ulster on 30 July 1610. The family built a bawn, then a manor, then over the next two centuries climbed from baronet to viscount to Earl of Gosford. The town that grew up at their gate took its name from the weekly market they held to bring their tenants in.
The first Norman-revival pile of its scale
Hopper's castle
Construction started in 1819, finished about 1825, designed by London architect Thomas Hopper for Archibald Acheson, the 2nd Earl. Granite from Mullaglass quarry, towers and battlements meant to look five hundred years older than they were. It was the largest private house in Ireland when it was finished and the earliest example of Norman-revival architecture in the British Isles. The Achesons walked away in 1921. The state took it in 1958. A developer bought the shell for £1,000 in 2006 and turned it into 23 flats. People live there now.
Three summers, several poems
Swift at Market Hill
Jonathan Swift, by then Dean of St Patrick's in Dublin and the most famous writer alive, came up to stay with Sir Arthur and Lady Acheson in 1728, 1729 and 1730. The poems he wrote here are called the Markethill Poems. The most famous, 'The Grand Question Debated', is a comic argument about whether Hamilton's Bawn — a ruined plantation fort a few miles east — should be turned into an army barrack or a malt-house. The barrack won. The bawn was demolished for it in 1731.
Game of Thrones, briefly
Riverrun
HBO used the front of Gosford Castle as the exterior of Riverrun, seat of House Tully, in seasons three and six of Game of Thrones. If you watched the show, this is the place where Robb Stark executed Rickard Karstark. The locals were politely uninterested then and remain so now.