| Precedence | Name | Branch | Highest Award |
|---|---|---|---|
| 839 | Odette the Swan | Montengarde | Award of Arms |
| — | Odli Goodwater Deceased | Borealis | Award of Arms |
| 480 | Odo of Montengarde | Montengarde | Award of Arms |
| 328 | Oenghus bally Mullaney | Montengarde | Goutte de Sang |
| 1194 | Offa of Sandesende | Sandeshend | Award of Arms |
| 58 | Ogedei Bahadur | Montengarde | Viscount/Viscountess |
| 1013 | Olaf Ericsbane | Sigelhundas | Award of Arms |
| 539 | Olaf Sigurdsson | Borealis | Award of Arms |
| 136 | Olaf the Snowman | Vinjar | Knight |
| 973 | Ole Geirsson | Bitter End | Award of Arms |
| 431 | Olena Borisova | Borealis | Award of Arms |
| 780 | Onora inghen Mc Thomais | Montengarde | Award of Arms |
| 235 | Onund Gunderson | Borealis | Jambe de Lion |
| 618 | Oonishikawa no Saburou Yoshimura | Montengarde | Award of Arms |
| 1020 | Oriana Severin | Borealis | Award of Arms |
| 715 | Orianna of Montengarde | Montengarde | Award of Arms |
| 482 | Orielle de Honfleur | Bitter End | Award of Arms |
| 244 | Orin Rassmussin | Borealis | Jambe de Lion |
| 1001 | Oser Druiseil | Montengarde | Children of Saint Ferdinand |
| 366 | Osric Fletcher | Montengarde | Golden Link |
| 921 | Oswyn of Bordergate | Bordergate | Award of Arms |
| 551 | Otto Gruber | Borealis | Award of Arms |
| — | Ovius Decumius Vitalis | Bordergate | |
| — | Owen de Caldekote Deceased | Borealis | Goutte de Sang |
| 930 | Oxara Grimskalla | Bitter End | Lion's Cub |
*** On or before date listed