| KOSS |
| Name | State | Number of records |
| KOSS: ALICE, LOUIS, ALTA | Indiana | 31 |
| HELEN KOSS | | 38 |
| KOSS born in 1908 | | 23 |
| WILLIAM KOSS | | 37 |
| KOSS born in 1897 | | 22 |
| KOSS: MICHAEL, ADOLPH, ALESSANDRA | Connecticut | 34 |
| KOSS born in 1911 | | 35 |
| KOSS: STEPHEN, JACK, NICHOLAS | New Jersey | 47 |
| EDWARD KOSS | | 37 |
| DEBBIE S: ANDERSON, BROWN, DONADIO | | 82 |
| KOSS born in 1925 | | 24 |
| KOSS born in 1916 | | 22 |
| KOSS: ANTHONY, EVELYN, ELIZABETH | Florida | 78 |
| KOSS born in 1918 | | 31 |
| KOSS born in 1912 | | 31 |
| KOSS born in 1919 | | 25 |
| KOSS born in 1920 | | 21 |
| KOSS: JULIA, ROSE, CHARLES | New York | 78 |
| ANNA KOSS | | 32 |
| KOSS born in 1903 | | 23 |
| KOSS born in 1902 | | 21 |
| KOSS born in 1913 | | 23 |
| GEORGE KOSS | | 38 |
| JOSEPH KOSS | | 51 |
| KOSS: STANLEY, ALBERT, DOROTHY | Massachusetts | 47 |
| KOSS: FRANCES, KATHERINE, JOSEPHINE | Ohio | 43 |
| KOSS: ALBINA, ALICE, ADELINE | Iowa | 27 |
| KOSS born in 1917 | | 28 |
| KOSS born in 1914 | | 27 |
| KOSS born in 1901 | | 20 |
| KOSS: ELSIE, LOUIS, KATHERINE | California | 75 |
| FRANK KOSS | | 58 |
| MARY KOSS | | 62 |
| JOHN KOSS | | 87 |
| KOSS born in 1923 | | 24 |
| KOSS born in 1905 | | 24 |
| KOSS born in 1921 | | 32 |
| KOSS born in 1898 | | 27 |
| KOSS born in 1922 | | 27 |
| KOSS born in 1910 | | 31 |
| KOSS born in 1927 | | 21 |
| KOSS born in 1909 | | 38 |
| KOSS born in 1915 | | 47 |
| KOSSA: JOHN, HELEN, CHARLES | | 67 |
| KOSSAKOWSKI: STANLEY, ANNA, FRANK | | 68 |
| KOSSAR: ROSE, JOHN, JOSEPH | | 57 |
| KOSSE: JOHN, JOSEPH, L | | 85 |
| KOSSEL: EDWARD, JOSEPH, ARTHUR | | 69 |
| KOSSEN: HARRY, WILLIAM, ARLINE | | 60 |
| KOSSER: LILLIAN, MICHAEL, CHARLES | | 39 |
| KOSSEY: JOHN, R, MARY | | 36 |
| KOSSICK: JOHN, FRANK, ELIZABETH | | 65 |
| KOSSIN: RUTH, WILLIAM, BENJAMIN | | 65 |
| KOSSLER: FRANK, JOHN, RICHARD | | 58 |
| KOSSOVER: JOSEPH, HAROLD, IRENE | | 36 |
| KOSSOW: CHARLES, VIOLA, LORRAINE | Wisconsin | 46 |
| KOSSOWSKI: JOHN, PAUL, LUCIAN | | 23 |
| KOSSOY: JACOB, ROBERT, ROSE | | 37 |
| KOSSUTH: STEPHEN, JOHN, MARY | | 110 |
Based on public records. Inadvertent errors are possible.
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