[3] Ballymore Eustace is located at the junction of the R411 and R413 regional roads, on the River Liffey, over which the R411 is carried by a relatively rare seven-arch bridge.

[4] The journey takes approximately 1 hour 30 minutes depending on traffic, and terminates in Dublin city centre at Poolbeg Street.

[11] Thomas Fitzoliver FitzEustace was granted a salary of £10 by the Archbishop for his work as constable and the upkeep of the castle in 1373, and his family came to be associated with the town, lending it its present name.

[10] It was a border town of the Pale, giving it strategic importance in the area, but also leading to its raiding by local Gaelic clans such as the O'Tooles and O'Byrnes.

It is over two metres tall and consists of a solid ring with short arms on a narrow shaft on a large undecorated rectangular base.

[16] Ballymore acted as a wool collection and trading centre for vast mountain areas to its east, including the King's River valley which fed into the Liffey.

The town and surrounding lands formed for centuries one of three adjacent exclaves of the barony of Uppercross, County Dublin.

These lands, originally part of Dublin because they belonged to religious foundations there, were among the last such exclaves in Ireland, being merged into Kildare only in 1836.

[12] In the 19th century, the town's largest source of employment was a cotton mill (owned by the Gallagher family), the ruins of which still stand by the river at a spot known as the "pike hole".

[citation needed] Near the town are the Blessington Lakes, or Poulaphouca Reservoir, created artificially in the 1940s by the damming of the river Liffey at Poulaphouca (the "Devil's hole") which was done to generate electricity by the Electricity Supply Board (ESB), and also to create a reservoir for the supply of water for the city of Dublin.

[citation needed] Wolfe Tone Band Hall on the eastern side of the town was built in 2000 and replaced an earlier 1906 building.

[20] In April 2014, local farmer and publican Paddy Murphy (who was rearing only white-faced Cheviot sheep at the time)[21] noticed that a sheep–goat hybrid, or "geep", had been born on his farm.

The unnamed offspring, with its "coarse coat of a lamb and the long legs and horns of a goat", was reported to be in good health.