| # |
Last Name, Given Name(s)  |
Person ID |
Born/Christened  |
Location |
| 601 |
 Constance of Brittany | I507 | | |
| 602 |
Constance of Antioch | I4125 | b. 1127 | Antioch, Contra Costa, California, United States  |
| 603 |
Constance of Castile | I3077 | b. 1140 | |
| 604 |
Emperor of Byzantium Constantine VIII | I3064 | | |
| 605 |
King of Scotland Constantine III | I3779 | | |
| 606 |
Emperor of Rome Constantine I | I4933 | b. 27 Feb 288 | Naissus, Serbia |
| 607 |
High King of Britain Constantine | I4989 | b. 460 | |
| 608 |
King of Scotland Constantine I | I2062 | b. 831 | |
| 609 |
King of Scotland Constantine II | I3740 | b. 876 | |
| 610 |
Emperor of Byzantium Constantine VII | I2488 | b. Sep 905 | Constantinople, Turkey |
| 611 |
King of Scots Constantine Macfergus | I3771 | | |
| 612 |
Corc Macanluain of Dalcassi | I5112 | b. 821 | |
| 613 |
King of Ireland Cormac | I4369 | b. 190 | |
| 614 |
King of Munster Cormac Cas | I5133 | b. 180 | |
| 615 |
King of Leinster Cormac Macailill | I2595 | b. 475 | |
| 616 |
King of Demetia Corth | I5013 | b. 390 | |
| 617 |
Cossutia | I4557 | b. 123 BC | |
| 618 |
Creassa ingen Archadh | I9294 | b. Abt 905 | , , Connacht, Ireland |
| 619 |
Crechan Ciantestach | I9319 | b. Abt 850 | , , , Ireland |
| 620 |
Creoda of Wessex | I2022 | b. 493 | |
| 621 |
King of Mercia Creoda | I2111 | b. 540 | |
| 622 |
Princess of Troy Creusa | I4509 | b. 1218 BC | |
| 623 |
King of Ireland Criffin Crimthann Niadh Naire | I4346 | b. 0040 BC | |
| 624 |
King of Leinster Crimthann Macendea | I2663 | | |
| 625 |
King of Ireland Crimthinn Coscrach | I4389 | b. 370 BC | |
| 626 |
Criomthan of Ireland | I16111 | | |
| 627 |
Croinsearch ingen Aedh Fionn | I9492 | b. Abt 580 | Ossory, , Ireland |
| 628 |
King of Cinnachta Cronain mac Tigernach | I9425 | b. Abt 540 | Cinnachta, , Munster, Ireland |
| 629 |
Cruaich mac Dulge | I9358 | b. Abt 310 | Ui Labrada, Leinster, Ireland |
| 630 |
King of Ulster Cruind Ba Drui mac Echdach | I9359 | b. Abt 340 | Ulster, , Ireland |
| 631 |
King of Ancient scotland Cruninluithe | I4238 | b. 216 | |
| 632 |
Crydon Ap Dyfnarth of Britain | I4479 | b. 440 BC | |
| 633 |
King of Scotland Culen | I3778 | | |
| 634 |
Abbess of Wimborne Minster, Saint Culthurga | I10025 | | |
| 635 |
Cumne Find ingen Baetan | I9345 | b. Abt 580 | Ulster, , Ireland |
| 636 |
Cundwalh of Mercia | I2108 | | |
| 637 |
King of Britain Cunedagius | I4487 | b. 850 BC | |
| 638 |
Cunedd Ap Coel of Alclud | I4464 | b. 220 | |
| 639 |
King of Gwenydd Cunedda Wledig | I1692 | b. 386 | Cardigan, Wales, United Kingdom |
| 640 |
St. Cunegundes of Luxemburg | I2190 | | |
| 641 |
Cunigunda | I9660 | | |
| 642 |
Cunigunde of Germany | I3000 | | |
| 643 |
Cursalem Ap Fer of Alclud | I4461 | b. 280 | |
| 644 |
Cutha of Wessex | I4322 | | |
| 645 |
Cutha of Wessex | I9986 | | |
| 646 |
Cutha Cathwulf of Wessex | I2018 | b. 592 | |
| 647 |
Cuthbert of Mercia | I2104 | | |
| 648 |
Cuthred of Wessex | I9993 | | |
| 649 |
King of Wessex Cuthred | I10180 | | |
| 650 |
Cuthwine of Wessex | I2019 | b. 565 | |
