| CORNOUAILLE, Lancelot van | | B. ABT 500 | | |
| CORNOUAILLES, Gerwenn | | B. 685 | | D. UNKNOWN |
| CORNWALL, Ann Beli d'Arimathea Princess of | | B. 1 | | |
| COTENTIN, Néel III de Saint-Sauveur Vicomte de | | B. ABT 1028 | | D. AFT 1066 |
| COTTA, Gaius Aurelius | | B. 124 BC | | D. 73 BC |
| COTTA, Lucius Aurelius | | B. 140 BC | | D. 119 BC |
| COTTA, Marcus Aurelius | | | | D. AFT 74 BC |
| COTTA VAN ROME, Aurelia | | B. 21 MAY 120 BC | | D. 31 JUL 54 BC |
| COTTINGHAM, Sir Robert II | | B. 1058 | | D. 1138 |
| COTYS, Tiberius Julius I | | | | D. about 68 |
| COTYS, Tiberius Julius II | | | | |
| COUGHTON, William de la Spine II of | | B. ABT 1234 | | |
| COUNT, Baducon "Batticho" of Alsace | | B. ABT 663 | | D. 725 |
| COUNT, Regnier Count of Saunois | | | | |
| COUNT OF AUVERGNE,, Warin I Macon and Chalon | | | | D. 839 |
| COUNT OF BOLOGNA AND ROMAGNA, Hucbald I | | B. 855 | | D. 893 |
| COUNT OF CAMBRAY GRAAF VAN VLAANDEREN, Rudolf | | B. ABT 865 | | D. 17 JUN 896 |
| COUNT OF LIMOUSIN, Gerhard II, | | | | D. 879 |
| COUNT OF LUNI, Oberto II | | B. 947 | | D. 10 JUL 1014 |
| COUNT OF LUXEMBOURG AND DUKE OF BAVARIA, Henry VII | | | | |
| COUNT OF MORTAIN, Robert | | B. ABT 1031 | | D. ABT 1095 |
| COUNT OF NEUSTRIA, Aubri I | | B. 630 | | D. ABT 700 |
| COUNTESS, Burcia Of Parma | | B. ABT 790 | | |
| COUNTESS, Ermentrude | | B. 954 | | |
| COUNTESS, Luitgard | | B. 965 | | D. 1017 |
| COUNTESS OF CHESTER, Ermentrude de Clemont | | B. 1045 | | |
| COUNTESS OF LUXEMBOURG, Eva | | B. 975 | | D. 25 APR 1020 |
| COUNTESS OF VASTO, Bertha Manfrido De Torino | | B. 977 | | D. 29 DEC 1037 |
| COURCY, Charles de | | B. ABT 925 | | |
| COURTENAY, Catherine de | | B. ABT 1245 | | D. ABT 1318 |