- Orr
- Orschel
- Ortega
- Osborn
- Osner
- Oster
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Catharina b. c 22 Mar 1766Johann Friedrich b. c 19 Aug 1760Maria Catharina b. c 1 Sep 1756Maria Elisabetha b. c 27 Sep 1758
- Ott
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Louisa F. b. 26 Sep 1884Lynn J. b. 16 Mar 1941, d. 22 Aug 2004Oscar Edwin b. 10 Apr 1903, d. Jul 1979Philomena R. b. 27 May 1880Willard F. d. 1990
- Otten
- Overby
- Overmeyer
- Owen
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Edward Grant b. 25 Oct 1923, d. 26 Feb 1988Evelyn Bernice b. 7 Jul 1925, d. 8 Nov 1953John Patrick b. 6 Aug 1894, d. 19 Apr 1968Peggy Jane b. 11 Nov 1936, d. 22 Nov 1936
- Oyler
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Ethel Sarrah b. c 1891, d. 13 Jul 1960Michael Valentine b. 14 Dec 1864, d. 8 Aug 1949
- Pabst
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Adam b. 6 Jun 1779Anna b. 9 Jun 1726Anna Dorothea b. 24 Apr 1740Anna Eva b. 18 Sep 1773Anna Margarethe b. 2 Feb 1742Anna Margarethe b. 26 Feb 1768Anna Maria b. 16 Mar 1782Catherine b. 15 Jan 1812, d. 24 May 1813Catherine b. 19 Sep 1815, d. 29 Sep 1897Heinrich b. 30 Mar 1808Johann b. 31 Jan 1738Johann b. 22 Nov 1784Johann Adam b. 15 Dec 1777Johann Georg b. 19 Nov 1723Margarethe b. 22 Jul 1795Maria Anna b. 10 Feb 1799Peter b. 11 May 1770Wilhelm b. 13 Aug 1744, d. 26 May 1799Wilhelm b. 4 Oct 1774, d. 31 Jan 1831Wilhelm b. 10 Feb 1805
- Padgett