| Obendrauff (Obenauß) Hanns | 1680 | A/St | 330 |
| Obendrauff Appolonia | 1728 | A/St | 165 |
| Oberdillingen (verh.) Hildegard | 930 | D/BAY | 1331 E |
| Oberdillingen Riwin I | 920 | D/BAY | 1330 E |
| Oberdillingen verh.Traungau | 970 | D/BAY | 665 E |
| Oberdorfer Eva | 1735 | A/W | 445 |
| Oberg Anna | 1475 | D/BRA | 43799 |
| Oberg Heinrich | 1415 | D/BRA | 87598 |
| Oberlahngau (verh.) Glismoda | 860 | D/HE | 44291 E |
| Oberlahngau Konradiner Konrad d.Ä. | 855 | D/HE | 44290 E |
| Oberlothringen Adalbert I | 1005 | F | 878 E |
| Oberlothringen Dietrich I | 960 | F | 3514 E |
| Oberlothringen Ermesinde | 1025 | F | 439 E |
| Oberlothringen Friedrich I | 912 | F | 274 C |
| Oberlothringen Gisela | 985 | F | 1757 E |
| Oberlothringen verh.Liutpoldinger | 940 | F | 137 C |
| Oberndorffer Dorothea | 1545 | CZ/B | 4339 |
| Oberstenfeld Graf Adelhard | 950 | D/NS | 2342 E |
| Oberstenfeld Gräfin Beatrix | 975 | D/NS | 1171 E |
| Octavia Minor | 70 | I | B 25911791831 G |
| Odaenathus So.d.Vaballathus | 290 | I | 791232 G |
| Oehningen (verh.) Liutgard | 955 | D/BW | 647 E |
| Oehningen Hemma | 980 | D/BW | 69 C |
| Oehningen Itha | 950 | D/BW | 1669 E |
| Oehningen Kunigunde | 965 | D/BW | 1377 E |
| Oehningen Kuno I | 925 | D/BW | 1292 E |
| Oehningen Kuno II | 950 | D/BW | 646 E |
| Oehningen verh.Kiew | 980 | D/BW | 323 E |
| Oertzen (Oerdessen) Diderich I | 1210 | D/ME | 2804736 |
| Oertzen (Uriz) | 1150 | D/ME | 5609472 |
| Oertzen Caspar I | 1480 | D/ME | 21912 |
| Oertzen Detwig I | 1270 | D/ME | 696928 |
| Oertzen Dietrich II | 1245 | D/ME | 1402368 |
| Oertzen Emerentia | 1580 | D/ME | 2739 |
| Oertzen Hans IV | 1405 | D/ME | 43558 |
| Oertzen Hermann I | 1280 | D/ME | 701184 |
| Oertzen Hermann II | 1316 | D/ME | B 350592 |
| Oertzen Hermann III | 1360 | D/ME | 175296 |
| Oertzen Jasper II | 1548 | D/ME | 5478 |
| Oertzen Johann I | 1305 | D/ME | 348464 |
| Oertzen Johann II | 1340 | D/ME | 174232 |
| Oertzen Katharina | 1425 | D/ME | 21779 |
| Oertzen Segeband | 1370 | D/ME | 87116 |
| Oertzen Sievert I | 1400 | D/ME | B 87648 |
| Oertzen Sievert II | 1430 | D/ME | 43824 |
| Oertzen Sievert IV | 1525 | D/ME | 10956 |
| Oeynhausen verh.Wettberg | 1450 | D/NS | 43911 |
| Olafsson Björn | 960 | S | 2708 E |
| Olafsson Ragnvald | 790 | N | 1670 B |
| Oldenburg Barbara | 1500 | D/SH | 10911 |
| Oldenburg Christian I | 1110 | D/NS | 89920052 |
| Oldenburg Egilmar I | 1050 | D/NS | 359680208 |
| Oldenburg Egilmar II | 1070 | D/NS | 179840104 |
| Oldenburg Hedwig | 1175 | D/NS | 22480013 |
| Oldenburg Jürgen | 1470 | D/SH | 21822 |
| Oldenburg Moritz I | 1150 | D/NS | 44960026 |
| Oldershausen (Westerhofe) Arnold | 1070 | D/NS | 179840896 |
| Oldershausen (Westerhofe) Daniel | 1040 | D/NS | 359681792 |
| Oldershausen Bartold I | 1265 | D/NS | 2810014 |
| Oldershausen Beate | 1305 | D/NS | 1405007 |
| Oldershausen Heinrich | 1100 | D/NS | 89920448 |
| Oldershausen Hermann I | 1134 | D/NS | 44960224 |
| Oldershausen Hermann II | 1170 | D/NS | 22480112 |
| Oldershausen Hermann III | 1200 | D/NS | 11240056 |
| Oldershausen Hermann IV | 1230 | D/NS | 5620028 |
| Oldershausen verh.Landesberg | 1314 | D/NS | 702501 |
| Olipp Margarethe | 1785 | A/K | 1c 49 |
| Omacius N. | 400 | F | 19660830 B |
| Onara Cunizza | 1125 | I | 4205 A |
| Onara Ezzelino I | 1090 | I | 8410 A |
| Onara Palma Novella | 1135 | I | 4207 A |
| Opland (verh.) Ulfhilde | 935 | N | 107 B |
| Opland Astrid | 960 | N | 53 B |
| Opland Gudbrand | 930 | N | 106 B |
| Oppen Hans | 1400 | D/NS | 175928 |
| Oppen Hans | 1360 | D/NS | 351856 |
| Oppen Konrad | 1250 | D/NS | 2814848 |
| Oppen Margarete | 1515 | D/NS | 21991 |
| Oppen Matthias | 1440 | D/NS | 87964 |
| Oppen Rudolf | 1480 | D/NS | 43982 |
| Oppen Rudolf | 1320 | D/NS | 703712 |
| Oppen Tilo | 1285 | D/NS | 1407424 |
| Oppershausen Dietrich | 1420 | D/SAA | 88042 |
| Oppershausen Ilse | 1455 | D/SAA | 44021 |
| Oppershausen Sybille | 1455 | D/SAA | 43937 |
| Orlamünde verh.Haldensleben | 980 | D/THÜ | 1709 E |
| Orleans Irmtrud | 830 | F | B 1201 B |
| Orleans Matfried I | 795 | F | 11424 B |
| Orleans Odo | 800 | F | 2402 B |
| Ortenburg Adalbert I | 1050 | D/BAY | 15200 A |
| Ortenburg Berlinde | 910 | D/BAY | 179 B |
| Ortenburg Caterina | 1265 | A/K | 475 A |
| Ortenburg Friedrich | 1240 | A/K | 950 A |
| Ortenburg Hermann I | 1200 | A/K | 1900 A |
| Ortenburg Otto I | 1095 | A/K | 7600 A |
| Ortenburg Otto II | 1142 | A/K | 3800 A |
| Ortenburg verh.Tirol | 1120 | A/K | 15049 A |
| Osdag Graf .... | 930 | D/NS | 2338 E |
| Osrhoene Awde | 45 | TK/as | 9 K |
| Osrhoene König Abgar V | -25 | TK/as | B 36 K |
| Osrhoene König Mannos III | -45 | TK/as | 72 K |
| Osrhoene König Mannos VI | 15 | TK/as | 18 K |
| Ostergau verh.Friesland | 835 | NL | 1215 B |
| Österreicher (verh.) Maria | 1870 | A/NÖ | 1c 11 |
| Österreicher Heinrich | 1860 | A/NÖ | 1c 10 |
| Österreicher Henriette | 1893 | A/W | 1c 5 |
| Ostersky Anna | 1545 | CZ/B | 8459 |
| Ostersky Jan | 1499 | CZ/B | 16918 |
| Ostfranken (dann Arles) Boso I d.A. | 785 | F | 1418 B |
| Ostfranken Gisla | 833 | D | 803 B |
| Ostfranken König Ludwig II d.Deutsche | 806 | D | B 1606 B |
| Ostgoten (Amaler) Amalfrieda | 465 | I | 9833551 B |
| Ostgoten (Amaler) Basena | 445 | H | B 65 D |
| Ostgoten (Amaler) König Theoderich d.Gr. | 453 | I | B 70 D |
| Ostgoten (Amaler) König Thiudimer | 430 | H | 140 D |
| Ostgoten (Amaler) König Vandalarius | 400 | H | 280 D |
| Ostgoten Ariagne | 470 | I | 35 D |
| Ostgoten König Valaravans | 335 | ROM | 1120 D |
| Ostgoten König Vinitharius | 370 | H | 560 D |
| Ostgoten Konkub. Ereleuva (Eusebia) | 430 | H | 141 D |
| Ostgoten Prn. Theodora | 490 | I | 1228851 B |
| Ostgoten Prn.Theudigota | 472 | I | 2457697 B |
| Ostgoten Vultuuf | 315 | UA | 2240 D |
| Oströmische Kaiserin Theodora | 497 | TK/eu | B 12363 G |
| Oströmischer Kaiser Arcadius | 377 | TK/eu | B 395740 G |
| Oströmischer Kaiser Theodosius II | 401 | TK/eu | B 197870 G |
| Otacilia | 500 | I | 6445858833 R |
| Otanes (verh.) To.d.Hystaspes | -553 | IR | 69 L |
| Otanes N. | -535 | IR | 34 L |
| Otanes N. | -575 | IR | 68 L |
| Otterbacher Barbara | 1585 | D/BAY | 1a 4097 |
| Otto (Otho) Caspar | 1590 | CZ/B | 2164 |
| Otto (verh.) Maria | 1595 | CZ/B | 2165 |
| Otto (verh.) Maria | 1622 | CZ/B | 1083 |
| Otto Christian | 1964 | A/W | B 1b |
| Otto Clemens | 1997 | A/W | B 1b 0a |
| Otto Gabriele | 1966 | A/W | B 1c |
| Otto Jacob | 1616 | CZ/B | 1082 |
| Otto Karl | 1787 | A/NÖ | 32 |
| Otto Karl | 1760 | CZ/S | 64 |
| Otto Maria | 1645 | CZ/B | 541 |
| Otto Marianne | 1961 | A/W | B 1a |
| Otto Rudolf | 1937 | A/W | B 2 |
| Otto Rudolf | 1906 | A/W | B 4 |
| Otto Rudolf | 1861 | A/W | B 8 |
| Otto Rudolf | 1824 | A/W | B 16 |
| Otto Stefanie | 1999 | A/W | B 1b 0b |
| Ovinia | 225 | I | 449 R |