Kilnamanagh is a townland and suburban residential area in Tallaght, County Dublin, Ireland. It is in the local government area of South Dublin. Its Irish name, Cill na Manach translates to "church of the monks", referring to the church and castle established to house Saint Kevin and his followers. Present day Kilnamanagh has ties to Glendalough, the oth…Kilnamanagh is a townland and suburban residential area in Tallaght, County Dublin, Ireland. It is in the local government area of South Dublin. Its Irish name, Cill na Manach translates to "church of the monks", referring to the church and castle established to house Saint Kevin and his followers. Present day Kilnamanagh has ties to Glendalough, the other resting place of St Kevin.