Built sometime during the late medieval period, likely between the 15th and 17th centuries, the castle served as both a defensive stronghold and a residence for local nobility. These tower houses were particularly common throughout Ireland during this era, when local lords needed structures that could withstand raids whilst providing comfortable living quarters for their families.

The castle’s architecture reflects the practical needs of its time; thick stone walls, narrow windows, and multiple floors accessible only by a spiral staircase made it easily defensible. The ground floor typically stored supplies and livestock, whilst the upper levels contained the main hall and private chambers. Murder holes above the entrance and bartizans at the corners allowed defenders to rain down projectiles on any unwelcome visitors. Despite its military features, the building also showcases elements of domestic comfort, including fireplaces, garderobes, and larger windows on the upper floors where residents could enjoy views across the Kilkenny landscape.

Today, the tower house at Grange stands as a reminder of Ireland’s turbulent past, when local chieftains and Anglo-Norman families vied for control of the rich agricultural lands of the region. Though many similar structures have fallen into complete ruin, this castle retains enough of its original form to help visitors understand how these buildings functioned as both homes and fortresses. Its survival through centuries of conflict, including Cromwell’s campaign and various local disputes, makes it an important piece of Kilkenny’s architectural heritage.