— harbour, [4], [74], [94], [208], [351]
— Richard Boyle, 1st Earl of, [3], [12], [13], [23], [209]
Cornwall, [64]
Corofin, [276]
Costello (Dillon), Viscount, [148], [298]
Coura Lake, [295]
Courcies, [351]
Courtenay, Captain George, [22]
Courthope, Captain, [208]
Courtmacsherry, [51]