O
| [2023791921] | O'Brien, _____ (b Est. 1159 - ) | Chapter XXXI |
| [4047583842] | O'Brien, Donnell, Knt. (b Est. 1126 - ) | Chapter XXXII |
| [8095170502] | O'Brien, Murrough, King of Munster (b Est. 1034 - ) | Chapter XXXIII |
| [129522713221] | O'Brien, Slani (b Est. 963 - ) | Chapter XXXVII |
| [513] | O'Neil, Rachel (b about 1750 - d 2 MAY 1840) | Chapter X |
| [1026] | O'Neill, John (b Est. 1717 - ) | Chapter XI |
| [20479881] | Oliver, Sibyl (b Est. 1237 - d after 1305) | Chapter XXV |
| [40959762] | Oliver, Walter, Lord of Wambrook (b Est. 1204 - ) | Chapter XXVI |
| [1373] | Orth, Anna (b Est. 1661 - ) | Chapter XI |
| [341] | Orth, Eva Maria (b 15 MAR 1714 - d 6 MAY 1754) | Chapter IX |
| [2728] | Orth, Johann (b 1610 - ) | Chapter XII |
| [1364] | Orth, Peter (b 1640 - ) | Chapter XI |
| [682] | Orth, Theodor Wilhelm (b 11 DEC 1678 - d 11 OCT 1743) | Chapter X |
| [637] | Osborn, Abigail (b 1707 - ) | Chapter X |
| [2548] | Osborn, Capt. John (b about 1646 - d 15 JUL 1709) | Chapter XII |
| [5096] | Osborn, Capt. Richard (b 1612 - d before 22 APR 1685) | Chapter XIII |
| [1274] | Osborn, Sgt. Samuel (b about 1680 - d 2 APR 1752) | Chapter XI |
| [518090895522] | Osorez, Gutierre (b Est. 867 - ) | Chapter XXXIX |
| [9954] | Otsen, Barent (b Est. 1574 - ) | Chapter XIV |
| [4977] | Otsen, Hendrickjen Barent (b Est. 1607 - ) | Chapter XIII |
| [126487045] | Oughrington, _____ (b Est. 1180 - ) | Chapter XXVII |
| [252974090] | Oughrington, John (b Est. 1147 - ) | Chapter XXVIII |
Adam 7.13 (now using TGP 1.03)