| MAC BLAIT, Congal Brecc | | B. ABT 565 | | D. DEAD |
| MAC BRESSAIL BÉLACH, Éndae Niae of Leinster | | B. ABT 382 | | D. 436 |
| MAC CAIRBRE, Eochu Eochu | | B. ABT 260 | | |
| MAC CAIRBRE, Fiacha Cathmail | | B. ABT 175 | | D. 252 |
| MAC CARTHANN, Muireadach | | B. 460 | | D. 502 |
| MAC CAS, Eochaidh Cruadh | | B. ABT 345 | | |
| MAC CATHAIR, Curigh Mór | | B. BEF 123 | | |
| MAC CATHAIR MÓR, Crimthann | | | | |
| MAC CATHAL, Tommaltach | | B. ABT 745 | | D. 789 |
| MAC CAUSANTÍN, Ildulb | | | | D. 962 |
| MAC CINÁEDA, Áed | | | | D. 878 |
| MAC COLLA FOCHRITH, Rochaid na Tara | | B. 310 | | |
| MAC CONAIL, Fergus Cerrbél of Uisnech | | B. 438 | | |
| MAC CONAIRE CÓEM, Cairbrey Riata | | B. 148 | | D. 186 |
| MAC CONDLA, Fiachu MacFindehal | | B. ABT 337 | | |
| MAC CORMACH, Anlach King of Ireland | | B. ABT 400 | | D. 450 |
| MAC CORMAIC, Cairpre Lithfeachair | | | | D. 285 |
| MAC CRIMTHANN, Aongus | | B. ABT 450 | | |
| MAC CRIMTHANN, Feredach Finnfechtnach High King of Ireland | | B. 5 | | D. 36 |
| MAC CRIMTHANN, Feredach Fionn Feachtnach | | B. 12 BC | | D. 37 |
| MAC CRIMTHANN, Fergus | | B. ABT 447 | | |
| MAC CRÍNÁN, Elder Daughter | | B. ABT 1005 | | D. DECEASED |
| MAC CRUNDMAEL, Aed Ron | | B. ABT 615 | | D. DEAD |
| MAC DAIG DUIRN, Fiacc na Tara | | B. ABT 350 | | |
| MAC DAIG DUIRN, Fiacc na Tara | | B. ABT 360 | | |
| MAC DELBAETH, Baetan Deis Tuaiscurt | | B. ABT 415 | | D. DEAD |
| MAC DIARMAIT, Colmain Már | | B. ABT 520 | | D. ABT 565 |
| MAC DOMANGAIRT,, Gabrán King of Dál Riata, Ulaid | | B. 507 | | D. 559 |
| MAC DOMANGART, Comgal | | B. ABT 507 | | D. 535 |
| MAC DOMNALL, Ruairaidh Mormaer of Moray | | B. 940 | | D. AFT 990 |