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| Last Name | First Name | Middle/Maiden | Age | Birthplace | Date of Death | Lot | Grave | Section |
| O' Kane | Walter | | | | | 46 | 8 | 2 |
| O' Shea | Virginia | Kelley | | | 1/16/1987 | 43 | 1 | 1 |
| O'Brien | Bernard | W | 86 | Rochester, NY | 9/25/2002 | K-37 | 2 | 4 |
| O'Brien | Doris | E | 81 | Rochester, NY | 5/30/1999 | K-37 | 1 | 4 |
| O'Donnell | Doris | Isabelle/Parrish | 92 | Lyons, NY | 12/3/2016 | K-61 | 4 | 4 |
| O'Donnell | Robert | James | 90 | Burke, NY | 12/29/2012 | K-61 | 4 | 4 |
| Oelkers | Carol | E. Marchant | 47 | Montreal, Canada | 5/1/1989 | O-18 | 1 | 3 |
| Oelkers | Herbert | Henry | 85 | Brooklyn, NY | 10/20/2020 | O-18 | 1 | 3 |
| Oeschger | John | | 92 | Switzerland | 7/8/1995 | K-36 | 2 | 4 |
| Oeschger | Marie | | 85 | Webster, NY | 3/16/1993 | K-36 | 1 | 4 |
| Oestreich | Henry | WilliamMartin | 7 | | 4/17/1948 | 61 | 8 | 2 |
| Oestreich | Norma | Mae/Tompkins | 102 | Webster, NY | 7/13/2003 | 61 | 7 | 2 |
| Oette | Edward | August | 80 | Rochester, NY | 3/7/2021 | C-48 | 1 | 4 |
| Oetting | Lynn | | 55 | Buffalo, NY | 9/3/2007 | H-45 | 3 | 4 |
| Ohstrom | Eric | Gustav | 97 | Stockholm,Sweden | 11/21/1997 | N-2 | 3 | 3 |
| Ohstrom | Lucille | E/Zahm | 94 | Perrysburg, NY | 7/9/2012 | N-2 | 4 | 3 |
| Okerlund | Patricia | J | 78 | Minneapolis, MN | 4/14/2012 | W-26-B | 4 | 3 |
| Okerlund | Roger | W | 79 | Minneapolis, MN | 12/12/2008 | W-26-B | 4 | 3 |
| Ollis | Anthony | J | 87 | Rochester, NY | 10/30/1989 | N-10 | 3 | 3 |
| Ollis | Madelena(Lena) | Maria | 91 | San Cataldo,Sicily | 5/12/2000 | N-10 | 4 | 3 |
| Olschewske | Diane | L./Kamm | 74 | Rochester, NY | 12/21/2020 | B-47 | 1 | 4 |
| Olsen | Domenica | Francis/Verni | 90 | Long Island, NY | 11/6/2020 | B-20 | 1 | 3 |
| Olsen | George | L | 41 | | 6/14/1969 | B-20 | 1 | 3 |
| Olson | Andrew | Linberg Jr. | 76 | Chicago, IL | 4/15/2019 | P-46 | 3 | 4 |
| Olson | Linda | K | 60 | Rochester, NY | 9/14/2009 | P-46 | 4 | 4 |
| O'Neill | Catherine | Delores | 94 | | 1/5/2010 | U-23 | 3 | 3 |
| O'Neill | Charles | R | 73 | | 4/24/1981 | U-23 | 4 | 3 |
| Opel | Luise | J | 85 | Germany | 11/24/2006 | I-47 | 4 | 4 |
| Opitz | Geoffery | | 25 | Rochester, NY | 11/17/1997 | O-20 | 2 | 3 |
| Orbaker | Doris | Ann/ Reinhardt | 73 | Rochester, NY | 5/15/2019 | O-38 | 3 | 4 |
| Orbanek | James | A | 79 | Rochester, NY | 3/10/2010 | M-37 | 2 | 4 |
| Orchard | Myron | | 84 | Corning, NY | 7/15/2022 | A-59 | 2 | 4 |
| O'Reilly | Kathleen | Elizabeth | 2 | Rochester, NY | 7/17/1992 | U-9 | 2 | 3 |
| O'Rourke | Loretta | K | 78 | Troy, NY | 3/12/2001 | J-63 | 1 | 4 |
| O'Rourke | William | J./Jr. | 72 | Canton, NY | 1/28/2020 | I-65 | 1 | 4 |
| O'Rourke | William | J./Sr | 82 | Ilion, NY | 5/26/2006 | J-63 | 2 | 4 |
| Osborn | Carmella | Alice | 64 | Rochester,NY | 1/20/2000 | L-57 | 2 | 4 |
| Osborn | John | J. Jr. | 71 | Buffalo, NY | 3/20/2003 | L-57 | 1 | 4 |
| Osborn | Julia | G | 51 | Rochester, NY | 9/8/2005 | L-58 | 1 | 4 |
| Ott | Dorothy | M/Zientara | 74 | Rochester, NY | 5/18/2010 | Q-45 | 3 | 4 |
| Ott | Melvin | Edward | 87 | Rochester, NY | 11/29/2019 | Q-45 | 4 | 4 |
| Owen | William | Vaughn MD | 55 | | 2/19/1982 | P-3 | 4 | 3 |
| Owens | Marcia | A | 63 | Rochester, NY | 7/8/2007 | I-3 | 4 | 3 |
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