The village was home to a monastery for hundreds of years, which was reputedly associated with Saint Patrick. The first bishop of Dromiskin was Lughaidh, son of Aengus mac Nadfraoch the first Christian king of Munster. St. Patrick reputedly pierced Aengus's foot with his pastoral staff during the baptism. Áed Findliath monarch of Ireland, son of Niall Caille, retired to and died at Dromiskin. The Chronicon Scotorum records his death at 879. O'Donovan records his death as 876 and the Annals of Ulster place it at 878. The next few hundred years would be turbulent times for Dromiskin. The constant plundering by both Viking and Irish would destroy the Abbey and disperse the monks. Annudh macRuaire rampaged through the territory in 1043 and Dromiskin was destroyed. The ecclesiastical site was abandoned and the monks took refuge in the neighbouring Abbey of Saint Mochta, the possessions of this ancient church being placed in the hands of the Prior of Louth Abbey. Dromiskin served as the home to the Archbishops of Armagh for a time. The Archbishops of Armagh lived at Dromiskin House. Archbishop Milo Sweetman is buried here. The old ninth century round tower and parts of the Abbey still remain. From the tower there is a view of all of Dundalk Bay and the surrounding countryside.
Parish
The village is part of the Darver and Dromiskin parish, Darver being a neighbouring village. The parish is bounded by the Fane River on the north and by the Glyde River on the south.
Demographics
Since the mid-1990s, Dromiskin, like many areas in County Louth, has seen an increase in population. In 2006, 992 people were living in Dromiskin. By 2016, the population of the village had increased to 1,195. According to 2016 census figures, 221 of the village's 391 private houses built between 1991 and 2010.
Sport
The local Gaelic football club, St. Joseph's, was formed in 1961. It covers the entire parish of Darver & Dromiskin, and won the Senior county championship in 1996 and 2006. As of 2011, the club were playing Intermediate level championship as well as Division 2league football, having been relegated from League Division 1 in 2010. The club's Minor team won the county championship for the first time in 2009 and retained the championship in 2010. There is also an athletics club, St Peter'sAthletic Club, based on the outskirts of the village.
Transport
Bus Éireannroute 168, Annagassan to Dundalk serves Dromiskin Mondays to Fridays inclusive providing one journey in each direction.