Dan the Irish Ordnance Survey maps will show townlands by name although not the boundaries. It doesn't matter much as they are all very small in area, but you would need to know whereabouts you were looking for as County Cork has 11 maps covering the area - 72, 73, part of 74, half of 79, 80, most of 81, 85, 86, 87, 88, and 89. Have you tried to get the maps locally? Or would Amazon do them? Good luck Mary