Jonesborough or Jonesboro (/ˈdʒoʊnzbərə/) is a small village and civil parish in the Ring of Gullion in County Armagh, Northern Ireland. It is about 5 miles (8 km) south of Newry and lies 1,000 yards (1 km) from the border with County Louth in the Republic of Ireland. The Catholic parish includes the neighbouring area of Dromintee and crosses the Irish border into Louth. It is well known for being the primary Irish black market.

Roth Jones founded the village in 1706. Jones was the landlord of the area in the early part of the 18th century. The village was previously known as Four Mile House.

Kilnasaggart stone stands in a field not far from Kilnasaggart Bridge. It is a tall pillar stone, 2 metres (6.6 ft) high, and inscribed with some Ogham script, crosses, most within circles, and a Gaelic inscription. The pillar-stone is said to have originally been a pagan site for Druidical worship and sacrifice. It is also believed to commemorate an ancient warrior or boundary. Also at this spot there is an ancient graveyard believed to have belonged to the Druids. The Pillar Stone stands at the Northern edge of a double circle of graves, the outer ring of graves being larger in size than the inner ones, with the feet of the dead pointing towards the centre. The graves cannot be seen as they are completely covered in grass. At the base of the stone there are some small stones with crosses engraved on them.

One of these small stones has a peculiar shape to it and it is supposed to fit into the cavity on the top of the pillar stone. There is a legend attached to this stone. This whole area west of Slieve Gullion, including Dromintee, was known as Gleann-na-Samhaisce, "The Glen of the Heifer". It is said that there once was a famous cow in this glen who gave milk in abundance to everybody who came, always filling the bucket. However, a person attempted either through greed or malice, to milk her into a sieve. This angered the cow so much that she stamped her foot on this stone and then fled the valley forever. The shape of her hoof remains in this stone to this day.

The name Cill na Sagart means Church of the Priests and it is believed a monastery stood here, although there is no trace of it today. The original church was a 5th-century Patrician foundation originally called Domnach Culind (Gullion Church). The poet Eóchaid Rígéices is buried here according to the 11th century Laud Genealogies- Mac dond Óengus-sin Eocho Rígéices, qui hospitatus apud Daimíne & qui sepultus est i nDomnuch Cuilind ("Aengus had a son Eochaid, the royal poet, who visited Daimine Daim Argat and who is buried in the church at Slieve Gullion"). He was the first cousin and nephew of the Ulaid kings Muiredach Muinderg and Forga mac Dallán mheic Dubthach. According to local folklore, the monastery was knocked down so that the materials could be used to erect Moyre Castle. When the monks settled here they adopted the pagan pillar stone and inscribed it with the inscriptions of crosses, some with circles. Part of the older Ogham inscription, an ancient form of writing, was hammered off. The crosses were a sign of the triumph of Christianity and the inscription a re-dedication of the stone. This is in Gaelic with one or two words either in Gaelic or Latin. It reads "this place Ternoc son of Ciaran the Little, assigned it unto the keeping of (or in return for the protection of) the Apostle Peter".

Some say that this Ternoc, son of Ciaran the Little died in 714 or 716 and others say that he was Tighernach brother of Thomain, Archbishop of Armagh in 623. Both Ternoc and Thomain are believed to be buried near the stone. It does appear however, that Ternoc was a holy man and devoted himself and his possessions to the service of God. The inscribed date of Ternoc's death makes this stone one of the earliest dateable Christian monuments in Ireland.

Moyry Castle, is built on solid rock, It is almost square, 8 metres (26 ft) each way and is three stories high. There are musketry loopholes on each wall except the North facing wall. This wall held the fireplaces which protrude on the outside. From this time (1601) on this place became known as Ballinemoyree or "place of the moyre" and was called in Irish "Bother a Mhaighre". A captain Anthony Smith, was made constable of the castle and left to guard the pass with twelve men.

In the patent rolls in 1606 King James I set aside the following area for the maintenance and security of the castle, fort and ward of Moyry: the towns, Dromintee, Carrickbroad, Dromad, Faughilotra, Faughart Faughiletra, part of Feede. The man who ordered the castle to be built was called Lord Deputy Mountjoy, who replaced Lord Deputy Essex who was beheaded after signing a truce with the enemy, the O'Neills. Lord Mountjoy's real name was Charles Blout. He was 36 when he was sent to Ireland by Queen Elizabeth. He was a soldier, Courtier, Scholar, Bookman and was also deeply religious. He could also speak French and Italian.