Officers Prior to 1858
- O Donaghy, Peter W.
- O Donaghy, William S.
- O'Davis, Matthew
- O'Neill, Francis
- O'neill, James E.
- Oakley, Benjamin
- Oakley, Charles
- Oakley, David S.
- Oakley, Isaac
- Oakley, James D.
- Oakley, James D.
- Oakley, John
- Oakley, John I.
- Oakley, John S.
- Oakley, John T.
- Oakley, Robert W.
- Ockabock, William G.
- Ockobock, Simion
- Ocobock, Simeon
- Ocwyn, Gerrit
- Odd, Abijah
- Odel, Abijah
- Odel, John
- Odell, Alteron
- Odell, Alteron
- Odell, Alteron
- Odell, Benjamin
- Odell, Benjamin
- Odell, Cornelius M.
- Odell, Daniel
- Odell, Daniel L.
- Odell, David
- Odell, Ira
- Odell, Ira
- Odell, James
- Odell, James
- Odell, James
- Odell, John
- Odell, John
- Odell, John
- Odell, Joshua
- Odell, Nathaniel
- Odell, Nathaniel
- Odell, Nathaniel P.
- Odell, Philip
- Odell, Reaves W.
- Odell, Reuben S.
- Odell, Reuben S.
- Odell, Vincent
- Odell, Wheeler
- Odgen, John Jr.
- Odiorus, Ebenezer
- Ogden, Abraham
- Ogden, Abraham
- Ogden, Abraham Jr.
- Ogden, Benjamin
- Ogden, Bilbert M.
- Ogden, Charles
- Ogden, David
- Ogden, Elias H.
- Ogden, Gilbert M.
- Ogden, Gilbert M.
- Ogden, Jesse B.
- Ogden, Jesse B.
- Ogden, Nicholas G.
- Ogden, Waron
- Ogden, William
- Ogden, William
- Ogden, William
- Ogden, William
- Ogden, William B.
- Ogden, William B.
- Ogsbury, Daniel
- Ogsbury, David Jr.
- Ogsbury, David Jr.
- Ogsbury, Peter
- Ohlen, George
- Olas, Harry
- Olcott, Sidney
- Olds, Luther
- Olds, Luther
- Olds, Otis
- Olds, Otis
- Olds, Stillman
- Olin, David
- Olin, Peleg
- Olin, Peleg M.
- Oliphant, John
- Oliver, Abel S.
- Oliver, Elson
- Oliver, George
- Oliver, George Jr.
- Oliver, James
- Oliver, William
- Oliver, William
- Olmstead, Abijah B.
- Olmstead, Chester
- Olmstead, Daniel
- Olmstead, Daniel
- Olmstead, Daniel
- Olmstead, David
- Olmstead, David
- Olmstead, Horace
- Olmstead, James
- Olmstead, James
- Olmstead, Lemuel
- Olmstead, Philo
- Olmstead, Ralph
- Olmstead, Ralph
- Olmsted, Francis
- Olmsted, James
- Olmsted, Mathew
- Olmsted, Nathaniel R.
- Olmsted, Philo
- Olmsted, William
- Olmsted, Zachariah
- Olney, Benjamin
- Olney, Benjamin
- Olney, Clinton
- Onderdonk, Adrian A.
- Onderdonk, Adrian D
- Onderdonk, Horatio G.
- Onderdonk, John
- Onderdonk, William
- Onderkirk, Henry
- Onderkirk, Isaac A.
- Onox, Charles
- Oothout, Isaac S
- Oothout, Volkert J.
- Oppie, James B.
- Orcott, Jesse
- Orcul, Horatio W.
- Orcutt, Daniel H.
- Orcutt, Giles
- Orcutt, Jesse
- Orcutt, Jesse
- Orms, Allen
- Orr, Alvin
- Orr, Joseph
- Orser, Albert
- Orton, Amos R.
- Orton, Garret V.
- Orton, Garret V. Z.
- Orton, Leman G.
- Orton, Leman G.
- Orton, Lemon
- Orton, Terez
- Orvington, Henry A.
- Orvis, Uriel H.
- Orvis, Uriel H.
- Orwin, John Jr.
- Osband, Durfee
- Osbern, Eri
- Osborn, Abijah
- Osborn, Abijah
- Osborn, Chauncey
- Osborn, Chauncey
- Osborn, David
- Osborn, David
- Osborn, David C.
- Osborn, David C.
- Osborn, Edward A
- Osborn, Eli
- Osborn, Eli
- Osborn, Eri
- Osborn, Frederick P.
- Osborn, Frederick P.
- Osborn, Henry
- Osborn, Henry
- Osborn, Horatio L.
- Osborn, Isaac
- Osborn, Isaac
- Osborn, John
- Osborn, John
- Osborn, Martin W.
- Osborn, Martin W.
- Osborn, Myron
- Osborn, Orin E.
- Osborn, Orson
- Osborn, Stephen
- Osborn, Uriah
- Osborn, Uriah
- Osborn, W.
- Osborn, William
- Osborn, William
- Osborn, William L.
- Osborn, William L.
- Osborne, Merrit
- Osborne, Nathaniel W.
- Osbornes, Frederick P.
- Osburn, Abijah
- Osburn, Charles
- Osburn, Orin E.
- Osgood, Allis S.
- Osgood, Emery
- Osgood, Emory
- Osgood, Gardner
- Osgood, John
- Osgood, Samuel W.
- Osterhout, Cornelius
- Osterhout, Cornleius
- Osterhout, John
- Osterhout, Nicholas
- Osterhout, Nicholas
- Osterhout, Nicholas
- Osterhout, Peter
- Ostrander, Abraham
- Ostrander, Alexander
- Ostrander, Alexander
- Ostrander, Daniel
- Ostrander, Elias
- Ostrander, Henry A.
- Ostrander, John C.
- Ostrander, Philip
- Ostrander, Philip Jr.
- Ostrander, Stephen
- Ostrander, Stephen
- Ostrom, David
- Ostrom, David J
- Ostrom, Henry
- Ostrom, Isaac L.
- Ostrom, John
- Ostrom, John
- Ostrom, John C
- Ostrom, John H.
- Ostrom, Samuel
- Ostrom, Thomas L.
- Ostrom, Thomas L.
- Ostrom, Thomas L.
- Ostrom, Thomas L.
- Ostrum, Rufus
- Ostrum, William H.
- Oswald, James
- Otis, Augustus w
- Otis, Austin W.
- Otis, Charles G.
- Otis, David G.
- Otis, John II
- Otis, Justin
- Otis, Oran G.
- Otis, Russell K.
- Otis, Sardis
- Otis, Sardis
- Otis, Sardis
- Otis, Sardis
- Otis, William
- Otman, William J.
- Ottey, William
- Ousterhoudt, Solomon
- Ousterhout, Peter
- Outwater, James
- Outwater, James
- Overacker, Charles
- Overacker, John
- Overacker, John
- Overacker, Michael Jr.
- Overbagh, John V.L.
- Overhiser, Barnett
- Overhizen, Abraham
- Overton, William H
- Overton`, Isaac
- Overton`, Isaac
- Oviatt, David
- Ovington, Henry A.
- Owen, Albert G.
- Owen, Amherst P.
- Owen, Augustus Holdridge
- Owen, Daniel D.
- Owen, Elihu B.
- Owen, Jason
- Owen, John
- Owen, John Jr.
- Owen, Robert C.
- Owen, Simeon D.
- Owen, William
- Owens, Amherst P.
- Owens, Jonathan
- Owens, Van Rensselaer
- Owens, Van Rensselaer
- Oxner, Henry
- Oxner, Henry
- Oxx, Samuel
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