There are two townlands named Kilcandra in this area - one in Glenealy civil parish just south of the town, and the other to the south in Dunganstown civil parish.
Cantwell's memorial inscriptions shows three graveyards in or near Glenealy town and the first Kilcandra townland - Glenealy Graveyard (CofI), Glenealy Old Graveyard and Glenealy RC church. I dont see any O'Reilly headstones in his list but he only includes the older headstones, i.e. pre 1880.
The original RC chapel in Glenealy was located a short distance to the north west of Glenealy and close to the Church of Ireland church. A later chapel, St. Joseph's, was built the other side of the town between the main road and the railway. The newer chapel doesn't appear to have room for an adjacent graveyard.
Glenealy c1837, Glenealy c1890 (OSI Maps)
Kilcandra townland is to the east of Glenealy, and there's no active church or graveyard marked o the historic maps, but indicated on the older OSI map is the site of an old church, inside what looks like a rath or ring structure - see : Kilcandra townland
The second townland of Kilcandra is located in the civil parish of Dunganstown (immediately south of Glenealy civil parish) and on the border with Redcross civil parish - see : here Cantwell includes memorials for one location in this area, that being near Kilbride in Dunganstown civil parish, which he refers to as 'Kilbride Church of St. Bridgid', just three dedications within the church.