sentences:  This work was dedicated by Bishop Elphinstone in 1498.The 500th anniversary of the dedication of the enlarged church was marked with the installation of a special stained glass window at the main entrance to the Kirk, overlooking Drum’s Aisle.The church contains the Drum Aisle (the ancient burial-place of the Irvines of Drum Castle) and the Collison Aisle, which divide the two congregations and which formed the transepts of the 12th-century church of St Nicholas (architectural detail survives from this period).