History of Athlone

The ford at this point on the River Shannon has been in use since at least the Bronze Age,[1] and the settlement (including an early Christian site)[1] expanded around this river-crossing. The ford of Athlone was strategically important, as south of Athlone the River Shannon is impassable until Clonmacnoise (where the Esker Riada meets the Shannon), and north is Lough Ree.

The two mortars in front of the medieval donjon of Athlone Castle are believed to date to the Williamite wars, and were previously located outside the main entrance of Custume Barracks.

By the 11th century, Tairrdelbach Ua Conchobair (King of Connacht) had built a wooden bridge at Athlone, approximately 100 metres south of the current bridge. This was defended by the earliest recorded fort on the site - built on the west bank of the river in 1129.[2]

On a number of occasions both the fort and bridge were subject to attacks, and towards the end of the 12th century the Anglo-Normans constructed a motte-and-bailey fortification here. This was superseded by a stone structure built in 1210 by Justiciar John de Gray. Becoming known as Athlone Castle, this 12-sided donjon dates from the 13th century. Other parts of the castle were largely destroyed during the Siege of Athlone and the external defences were subsequently rebuilt and enlarged.

The currently visible battlements and cannon emplacements were installed to prevent a French fleet from sailing up the River Shannon and establishing a bridgehead in Lough Ree (likewise south of Athlone at Shannonbridge, near Clonmacnoise). The castle was later damaged by a lightning strike on the powder store. The castle was also home to a small garrison, and provided housing for several families until the 1980s. These quarters now house part of the castle museum.

During the wars that took place in Ireland during the seventeenth century, Athlone held a strategic position, holding the main bridge over the Shannon into Connacht. In the Irish Confederate Wars 1641–1653, the town was held by Irish Confederate troops until it was taken late in 1650 by Charles Coote, who attacked the town from the west, having crossed into Connacht at Sligo.

Forty years later, during the Williamite war in Ireland, the town was again of strategic importance, being one of the remaining Jacobite strongholds after they had retreated west following the Battle of the Boyne. At the first battle of Athlone in 1690, the Jacobite forces of Colonel Richard Grace repelled an attack by 10,000 men led by Commander Douglas.[3] The following year the Siege of Athlone saw a further assault in which the troops of King William III eventually prevailed against the outnumbered defenders.

The current bridge was built in the 19th century to replace the old bridge which was becoming dangerous to the increasing volume of traffic. Originally the bridge had a moveable section which was decommissioned in the mid 20th century. Also during the mid-19th century, the Board of Works built a weir wall south of Athlone to improve the navigation of the river.

From the Annals of Inisfallen

• AI998.2 Brian, son of Cennétig, [went] to Áth Luain, took the hostages of Connachta in one week, and handed them over to Mael Sechnaill.
• AI1001.5 A great obstruction against the men of Mumu [was placed] on the Sinann at Áth Luain by Mael Sechnaill, and by the king of Connachta and by all Leth Cuinn.
• AI1002.2 A hosting of the men of Mumu into Connachta, and they took the hostages of Connachta at Áth Luain, and the hostages of Mael Sechnaill.