Die Ahnentafelsammlung befindet sich in der Bibliothek der Genealogischen Gesellschaft Hamburg e.V. im Bergedorfer Schloß
| >Name, Vorname | Ahnenliste Nr. | Bemerkungen |
| Caj | 726 | |
| Callisen | 636, 666 | |
| Calsow | 295 | |
| Calven, von | 88 | |
| Calwer | 60 | |
| Cameraria | 503 | Augsburg |
| Cammann | 297 | |
| Cammermann | 426, 435 | |
| Campen, von | 410 | |
| Campion | 723 | |
| Cangers | 722 | |
| Capel | 346 | |
| Capella | 717 | |
| Capelle | 502 | Lübeck |
| Capellen | 328, 346 | |
| Capello | 717 | |
| Cappel | 531 | Osnabrück |
| Cappel, von | 537 | Wallenbrück (Westfalen) |
| Carbuhn | 119 | |
| Cardel | 297 | |
| Carls | 213, 297 | |
| Carl | 213, 297, 360, 724 | |
| Carlson | 62 | s.a. Buch No. 544 u. Anl. |
| Carr | 173 | |
| Carstens | 514 | Metjendorf |
| Carstens | 517 | Buttel |
| Carstens | 598 | Peine (?) |
| Carstens | 368 | Wardenberg (Oldenbg.) |
| Carstens | 355 | Hedwigenkroog (Wesselb.) |
| Carstens | 299 | Tating |
| Carstens | 270 | Westerdeich-Dieckhausen |
| Carstens | 8, 45 | Lübeck |
| Carstens | 825c | Ahnenliste Dau: Kröppelshagen, Dassendorf, Brunstorf |
| Carstensen | 113, 179, 185 | |
| Casemann | 362, 363 | |
| Caspar | 11, 62 | Bebenhausen (?), Murrhard |
| Caßel | 724 | |
| Casten | 127, 328, 342 | |
| Castens | 688 | |
| Caster | 44 | s.a. Buch No. 544 u. Anl. |
| Castorp | 666 | |
| Causel | 283 | |
| Caven / Cavensch | 111 | |
| Caven / Cavensch | 615 | Klocksdorf |
| Cay | 726 | |
| Chrispens, Edward | 79B | New Holstein, Wisc., USA; s.a. Buch No. 544 u. Anl. |
| Christ | 7, 723 | |
| Christeer / Christiern | 111 | |
| Christeer / Christiern | 627 | Klocksdorf |
| Christel | 8 | s.a. Buch No. 544 u. Anl. |
| Christen | 150 | |
| Christensen | 158, 162, 179, 185, 185a, 245 | |
| Christensen | 20B | New Holstein, Wisc., USA |
| Christian I. (der Erste) | 299 | |
| Christiansen | 171, 297 | |
| Christiansen | 36, 44, 59, 77, 82B | New Holstein, Wisc., USA |
| Christiany | 711 | |
| Christmann | 44 | s.a. Buch No. 544 u. Anl. |
| Christoffels | 420, 428 | |
| Christoph | 370 | |
| Christophersen | 44 | s.a. Buch No. 544 u. Anl. |
| Chrauser | 67 | s.a. Buch No. 544 u. Anl. |
| Chüden, von | 503 | Altmark |
| Churwahlen | 403 | |
| Cichorius | 164 | |
| Cieraria | 68 | |
| Cierke | 44 | s.a. Buch No. 544 u. Anl. |
| Claassen | 401 | |
| Claassen | 131 | New Holstein, Wisc., USA |
| Clair | St. of Wanwutosa; s. Matthaeus 65; s.a. Buch No. 544 u. Anl. | |
| Clamer | 725 | |
| Clark | 47B | s.a. Buch No. 544 u. Anl. |
| Clasen | 139 | Hademarschen |
| Clasen | 297 | Ulsnis, Rendsburg |
| Clasen | 725 | Hilsfeld |
| Classen | 297 | |
| Claßen | 715 | |
| Claßen | 778, 781 | Poggensee |
| Claus / Claussen | 2534 | S. 22 |
| Claus / Clauß / Claws | 684 | |
| Claus / Clauß / Claws | 765 | Billwerder |
| Claus / Clauß / Claws | 770, 781, 816 | Ratzeburg (Claws) |
| Clausen | 185 | Jalm, Wohl |
| Clausen | 212 | Intschede, Reer |
| Clausen | 225, 734, 737 | Winnert, Ostenfeld |
| Clausen | 407 | Breitenfelde |
| Clausen | 408 | Nusse, Kuhberg |
| Clausen | 507 | Garding (Eiderstedt) |
| Claussen | 152, 179, 407, 408, 746 | |
| Claußen | 502 | Hamburg |
| Claußen | 544 | Putlos |
| Clausing | 745 | |
| Clausius | 712 | |
| Clemann | 109 | |
| Clement, Botte | 85B | s.a. Buch No. 544 u. Anl. |
| Cleve | 135 | |
| Clevermann | 515 | Stallkamm i. O. |
| Clobus | 717 | |
| Clod / Clodt | 8 | |
| Clod / Clodt | 449 | Oldershausen |
| Cloodt | 8 | |
| Clooh | 8 | |
| Cloppenburg | 710 | |
| Clow, James | 50 | s.a. Buch No. 544 u. Anl. |
| Cluden | 427, 437 | |
| Clüver | 211 | |
| Clus | 684 | |
| Cochet | 756 | |
| Cöler | 162 | |
| Cöler | 535 | Rostock |
| Cöllen | 219, 387 | |
| Cöln, von | 433 | |
| Cörten | 224, 395 | |
| Coi | 726 | |
| Colander | 406, 754 | |
| Cole | 57 | s.a. Buch No. 544 u. Anl. |
| Colin | 502 | Niederlande, Hamburg |
| Collasius | 598 | Demerthin (?) |
| Collen, van | 136 | |
| Collier | 724 | |
| Collin | 723 | |
| Collmann | 297 | |
| Comans | 150 | |
| Comte, le | 30 | |
| Conrad | 199, 274, 372, 711, 714, 721 | |
| Conradin | 728 | |
| Conte | 720 | |
| Cooley | 10(B), 50, 54, 66, 79B | |
| Coon | 66 | s.a. Buch No. 544 u. Anl. |
| Cook | 46B | s.a. Buch No. 544 u. Anl. |
| Corbach | 23 | |
| Corbets | 54 | s.a. Buch No. 544 u. Anl. |
| Cordes | 127, 161, 168, 194, 195, 743 | |
| Cordes | 467, 471 | Vögelsen |
| Cordes | 789 | Pötrau |
| Coors | 743 | |
| Cords | 194 | |
| Corff-Schmising | 539 | Harkotten |
| Corleus | 257 | |
| Cornelissen | 502 | Hamburg |
| Corniels | 509 | Garding (?) |
| Cornils | 636, 637 | |
| Corvin | 573 | Warburg |
| Courvosier | 704 | |
| Courvoisier | 233 | |
| Coy | 726 | |
| Cramer | 183 | |
| Crampe | 346 | |
| Cranach | 666 | |
| Crantz | 209, 292 | |
| Crantz | 502 | Hamburg |
| Crassmann | 463 | Handorf (?) |
| Craßmann | 160 | |
| Crating | 124 | |
| Craut | 155 | |
| Creienberg | 332 | |
| Cretien | 30 | |
| Crispin | 85 | |
| Criwitz | 718 | |
| Crocker | 57 | s.a. Buch No. 544 u. Anl. |
| Crohn | 188 | |
| Croix, de la | 30 | |
| Croix, de la | 60 | New Holstein, Wisc., USA |
| Cron | 722 | |
| Crüger | 164 | |
| Crützfeldt | 186 | |
| Crützmann | 754 | Breitenfelde |
| Crützmann | 412 | Hornbeck/Breitenfelde |
| Crützmann | 793 | Grove, Kankelau |
| Cruse | 305, 332, 505 | |
| Crusius | 598 | Demerthin (?) |
| Crußmann | 160 | |
| Crützfeld / Crutzefeldt | 617 | Klein Thurow |
| Cruyce, van der | 502 | Antwerpen |
| Cullen | 3, 10B, 70 | s.a. Buch No. 544 u. Anl. |
| Cumer | 637 | |
| Cumeria | 68 | |
| Cunrath | 276 | |
| Curio | 2534 | S. 24 |
| Curtiss | 44, 63, 64, 66 | s.a. Buch No. 544 u. Anl. |
| Cybulski | 710 |