- Cainnech, St (Canice or Kenneth)
- Cairns, David
- Cairnín, St
- Cairns, Hugh McCalmont
- Caldwell, Robert
- Callan, Bernard (Brian Ua Cathaláin)
- Campbell, Agnes
- Campbell, Alexander
- Campbell, Arthur
- Campbell, Frederick George
- Campbell, J.
- Campbell, James
- Campbell, James Joseph
- Campbell, John 1663-1730
- Campbell, John 1862-1929
- Campbell, John Patrick
- Campbell, John P.
- Campbell, Joseph (Mac Cathmhaoil, Seosamh)
- Campbell, Samuel Burnside Boyd
- Campbell, Thomas
- Campbell, Thomas Joseph
- Campbell, William Howard
- Canning, Albert
- Canning, George
- Carbery, Eithne
- Carey, John
- Carey, Joseph W.
- Carleton, Guy
- Carleton, William
- Carlile, Ann Jane (nee Hamill)
- Carmichael, Amy Beatrice
- Carnduff, Thomas
- Carney, Winifred
- Carson, Alexander
- Carson, Edward Henry
- Cary, Arthur Joyce Lunel
- Casement, Anne Beatrice
- Casement, Frances Mabel
- Casement, Francis
- Casement, Roger
- Cassells (or Cassel), Richard
- Cassidy, James
- Castlereagh, Viscount
- Caulfield, James
- Cellach, St (Celestine or Celsus)
- Centlivre, Susanna nee Freemen
- Charlemont, James
- Charles, John James
- Charles, Richard Havelock
- Charles, Robert Henry
- Charley, William Thomas
- Chermside, Robert Alexander
- Chesney, Charles Cornwallis
- Chesney, Francis Rawdon
- Chesney, George Tomkyns
- Chichester, Arthur 1563-1625
- Chichester, Arthur 1606-1675
- Chichester, Frederick Richard
- Chichester, William
- Churchill-Luck, Mrs (nee Spottiswoode-Ashe)
- Ciarán, St
- Cilian, St
- Cinnamond, Robert
- Clanny, William Reid
- Clark, Miles
- Clarke, Adam
- Clarke, Harry
- Clarke, Joseph
- Clarke, Margaret (nee Crilley)
- Clarke, Maud Violet
- Clarke, Thomas J.
- Clive, Catherine (nee Rafter)
- Clotworthy, John
- Coburn, Joseph
- Coigly, James
- Cole, Florence
- Cole, Galbraith Lowry
- Cole, William
- Cole, William Willoughby
- Colgan, John (O Colgan, Sean)
- Collie, George
- Colmán, St
- Colmcille, St (Columcille or Columba)
|
- Colton, John
- Colum, Pádraic
- Columba, St
- Columbán, St
- Columbanus, St
- Columcille, St
- Colville, Alexander
- Comgall, St (or Congal)
- Conall, Cernach
- Concannon, Helena (nee Walsh)
- Congal, Cláen
- Conn, William H.
- Connolly, James
- Connolly, Joseph
- Connolly, William
- Conor Mac Nessa (Conchobar mac Nessa)
- Conor, William
- Conway, William
- Cooke, Henry
- Cooley, Thomas
- Coon, Albert Daniel
- Cooper, Henry Frederick Thomas
- Copley, Clara
- Coppin, William
- Corbreus, St (Coirpre)
- Cordner, Joseph
- Cormacan Eigeas Mac Maelbrigde
- Corry, Isaac
- Coulter, John
- Cousins, James Henry Sproull
- Cousins, Margaret (nee Gillespie)
- Cowan, Edward Porter
- Cowan, Samuel Kennedy
- Coyle, Kathleen
- Coyne, Joseph Sterling
- Craig, James b.1861
- Craig, James 1871-1940
- Craig, James Humbert
- Craig, Joseph
- Crawford, Adair
- Crawford, Ebenezer
- Crawford, Julia
- Crawford, Thomas
- Crawford, William Ernest
- Crawford, William Sharman
- Crawford, William Thomas
- Creagh, Richard
- Creagh, William
- Cremer, Patrick Thomas
- Crichton, F.E.
- Crofts, Freemen Wills
- Croker, John Wilson
- Crolly, George
- Crolly, William
- Cromer, George
- Crommelin, Maria Henrietta (May) de la Cherois
- Crommelin, Louis
- Crone, Anne
- Crone, John Smyth
- Croskerey, Thomas
- Cross, Eric
- Crossagh, Shane
- Crossley, Francis William
- Crossley, Willian John
- Crowley, Nicholas J.
- Crozier, Francis Rawdon Moira
- Crozier, John Baptist
- Cu Chulinn
- Cullen, Paul
- Cumming, William
- Cummings, James Sleator
- Cunningham, Robert Oliver
- Curld, John
- Curran, John Oliver
- Curtis, Patrick
- Cusack, Margaret Anne
- Cusack Smith, Willaim
- Cush, Wilbur W.
- Cushen, Lord
- Cust, William
- Cuthbert, William Mitchel
|