| O'Connor, L. W. G-2-266114 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 400 | Sep 2011 – Mar 2012 |
| O'Connor, L. W. G-2-220622 | Mary Ellen Oconnor (H-105A) | Refugio | 1 | 0 | 69.5K | Feb 2006 – Feb 2012 |
| O'Connor, L. W. G-2-142049 | Mary Ellen O'Connor (FS-20) | Refugio | 1 | 0 | 521K | Jan 1993 – Feb 2011 |
| O'Connor, Mary Ellen G-2-221305 | Mary Ellen Oconnor (4140) | Refugio | 1 | 0 | 60.5K | Aug 2006 – Sep 2009 |
| Obrien, J. J. G-2-225547 | Refugio Old | Refugio | 1 | 2.69K | 19.3K | Mar 2006 – Oct 2008 |
| O'Connor, Mary Ellen G-2-188886 | Mary Ellen Oconnor (FS-47 Sand) | Refugio | 1 | 0 | 4.15K | Nov 2003 – Aug 2008 |
| O'Connor, Mary Ellen G-2-188888 | Mary Ellen Oconnor (H-117) | Refugio | 1 | 0 | 54.4K | Jan 2003 – Aug 2008 |
| O'Brien, J.J. G-2-202079 | Refugio Old (2960) | Refugio | 1 | 0 | 968 | Apr 2006 – Apr 2006 |
| O'Connor, L.W. G-2-190386 | Mary Ellen Oconnor (FS-75) | Refugio | 1 | 0 | 576K | Apr 2001 – Apr 2006 |
| O'Connor, L. W. G-2-183115 | Mary Ellen Oconnor (FS-1) | Refugio | 1 | 0 | 203K | Feb 2001 – Jan 2006 |
| O'Brien, J. J. G-2-185207 | Refugio Old | Refugio | 1 | 1.47K | 19.5K | May 2001 – Sep 2002 |
| Oconnor, Mary Ellen - Exxon G-2-164716 | Mary Ellen Oconnor (5000) | Refugio | 1 | 0 | 61.7K | Apr 1997 – Dec 2001 |
| O'Connor, Mary Ellen G-2-175425 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 208K | Aug 1995 – Dec 2001 |
| O'Connor, Mary Ellen G-2-153585 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 252K | Mar 1995 – Dec 2001 |
| O'Connor, Mary Ellen G-2-157778 | Mary Ellen Oconnor (H- 12) | Refugio | 1 | 0 | 219K | Dec 1995 – Dec 2001 |
| O'Connor, Mary Ellen G-2-155077 | Mary Ellen Oconnor (H- 12) | Refugio | 1 | 0 | 146K | Aug 1995 – Oct 2001 |
| O'Connor, Mary Ellen G-2-154157 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 206K | May 1995 – Sep 2001 |
| O'Connor, Mary Ellen G-2-150797 | Mary Ellen O'Connor (FS-20) | Refugio | 1 | 0 | 592K | Aug 1994 – Jan 2001 |
| O'Connor, L.W. G-2-156074 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 95.2K | Nov 1995 – Apr 1999 |
| O'Connor, Mary Ellen G-2-153797 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 172K | May 1995 – Feb 1998 |
| O'Connor, Mary Ellen G-2-157107 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 803 | Feb 1996 – Feb 1996 |
| O'Connor, L.W. G-2-151036 | Mary Ellen Oconnor (H- 12) | Refugio | 1 | 0 | 80.8K | Aug 1994 – Jul 1995 |
| O'Connor, Mary Ellen G-2-150909 | Mary Ellen O'Connor (FS-20) | Refugio | 1 | 0 | 75.2K | Mar 1994 – Jul 1995 |
| O'Connor, L. W. G-2-147722 | Mary Ellen Oconnor (M-122) | Refugio | 1 | 0 | 46.3K | Dec 1993 – Oct 1994 |
| O'Connor, L. W. G-2-137359 | Mary Ellen Oconnor (FS-75) | Refugio | 1 | 0 | 67.2K | Jan 1993 – Feb 1994 |
| O'Connor, Mary Ellen G-2-147980 | Mary Ellen Oconnor (5500) | Refugio | 1 | 1.96K | 21.1K | Oct 1993 – Jan 1994 |
| Guadalupe "B" de Garcia G-4-125582 | San Diego, N. (Yegua 5030) | Duval | 1 | 0 | 0 | — |
| Oconnor, L. W. G-2-2985 | Mary Ellen Oconnor (H- 50) | Refugio | 1 | 0 | 0 | — |
| Oconnor, L. W. G-2-2999 | Mary Ellen Oconnor (FQ-25) | Refugio | 1 | 0 | 0 | — |
| Holmes G-3-66101 | Thursday (Woodbine) | Trinity | 1 | 0 | 0 | — |
| Oconnor, L. W. G-2-2977 | Mary Ellen Oconnor (D-1) | Refugio | 1 | 0 | 0 | — |