Killagoola (Cill Ogúla) is a small townland lying in the civil parish of Moycullen in County Galway, Ireland. It is located about 8 miles from Galway city, just off the N59 road which travels north from Galway towards Clifden. Its name is derived from the Irish name of Cill Ogúla, which means Church on the Shoulder (of a hill). Indeed there is the ruins of a small church within the boundaries of Killagoola, on the largest site in the area, Crú Hill.
Ross Lake (Irish: Loch an Rois) is a freshwater lake in the west of Ireland. It is part of the Lough Corrib catchment in County Galway.
Moycullen (Irish: Maigh Cuilinn) is a Gaeltacht civil parish in the ancient barony of the same name. It is located in the western shore of Lough Corrib in County Galway, Ireland and is around 4 miles (6.4 km) north-west of the city of Galway on the road to Oughterard. The parish contains 27,294 statute acres. According to Lewis's survey of 1837, "The land is of very indifferent quality; and there is a large quantity of reclaimable waste and bog.". The parish gets its name from the church, now in ruins, that is situated around 1 mile (1.6 km) to the east of the village, in the townland of Moycullen itself.