Duncadh, Abbot of Iona, [15]
Dundalk, [13], [67], [129], [199], [222], [231], [237], [247], [263], [363], [397], [403]
Dundrum, in Down, [127], [232], [353]
Dungannon, [63], [119], [120], [127], [243], [264]
Dungannon, Matthew O’Neill, or Kelly, first Baron of, [269], [363], [364], [368], [376], [377]
Dungarvan, [182], [183], [187], [189], [193], [331], [379], [412]
Dunkellin, Barony of, created, [271]
Dunlavin, [23]