| OLA |
| Name | State | Number of records |
| OLA: JOSEPH, DOROTHY, ROSE | | 58 |
| OLACK: JOHN, JOSEPH, DAVID | | 34 |
| OLAES: R, EMILIO, TONY | | 49 |
| OLAFSEN: OLAF, MARY, HENRY | | 66 |
| OLAFSON: CLARENCE, RAYMOND, OLAF | Minnesota | 50 |
| OLAFSSON: JOHN, VELMA, THORHALLUR | | 33 |
| OLAGUE: ALADINO, ANASTACIO, ADOLFO | Texas | 42 |
| OLAH: MARY, JAMES, ALEX | Michigan | 47 |
| OLAH: WILLIAM, ANDREW, MARY | Florida | 30 |
| OLAH: MARY, ELIZABETH, ROBERT | Ohio | 78 |
| JOHN OLAH | | 46 |
| JOSEPH OLAH | | 39 |
| OLAH: ANDREW, MARY, ELIZABETH | Pennsylvania | 41 |
| OLAH: ANNA, MARY, FRANK | New York | 36 |
| OLAH: CHARLES, STEVE, EVELYN | New Jersey | 54 |
| OLAH: IMRE, IRENE, ANNA | California | 49 |
| OLAKER: OPAL, ROSEMARY, JOSEPH | | 32 |
| OLALDE: MARIA, JUAN, RAMON | | 56 |
| OLANDER: ESTHER, RICHARD, FRED | Minnesota | 65 |
| OLANDER: DONALD, BEATRICE, ANN | Florida | 22 |
| OLANDER: ALICE, CHARLES, CATHERINE | Illinois | 68 |
| OLANDER: EDWARD, MARY, KATHERINE | Connecticut | 38 |
| CARL OLANDER | | 35 |
| OLANDER: HELEN, JOSEPH, JOHN | Pennsylvania | 36 |
| OLANDER: WILLIAM, ELIZABETH, ERMA | Massachusetts | 21 |
| OLANDER: ALBERT, ROBERT, ANNA | California | 90 |
| OLANDER: GEORGE, MARY, JOHN | New York | 33 |
| OLANDER: MARTIN, DONALD, DOROTHY | Colorado | 28 |
| JULES D: JOSEPH, RANIERI, ROSS | | 46 |
| OLANIE: ELLA, FRANCIS, LUCILLE | | 24 |
| JAVIER F: ROMERO, SOLIS, NAVARRO | | 39 |
| OLANO: MARIA, LUIS, PAUL | | 100 |
| OLANOFF: IRVING, LOUIS, ROSE | | 35 |
| OLANS: ANNA, ELI, RHODA | | 26 |
| OLANSKY: BESSIE, ABRAHAM, DORA | | 27 |
| OLAR: JOHN, MARY, ANNA | | 50 |
| OLARI: FRANK, ROBERT, AURELIA | | 28 |
| KATHARENE : HOLLAND, PROKOPP, OLARNER | | 23 |
| OLARTE: JORGE, RICHARD, MARIA | | 65 |
| OLAS: JOHN, ZENO, JOSEPH | | 40 |
| OLAUGHLIN: MARGARET, MARY, CATHERINE | Illinois | 43 |
| OLAUGHLIN: JAMES, ROBERT, KENNETH | California | 55 |
| JOHN OLAUGHLIN | | 44 |
| OLAUGHLIN: MARY, THOMAS, MARGARET | New York | 36 |
| JAMES OLAUGHLIN | | 24 |
| OLAUSEN: OLE, GEORGE, FLORENCE | | 42 |
| OLAUSON: JOHN, LLOYD, DONALD | | 39 |
| OLAVE: LOUIS, JOSE, LUIS | | 46 |
| OLAVESON: HELMER, JAMES, CARL | | 31 |
| OLAY: JOSEPH, ANNE, MARIE | | 57 |
| TESSIE P: STANLEY, TILLETT, SIMMONS | | 40 |
| OLAZABAL: JOSE, MARIA, DAVID | | 76 |
Based on public records. Inadvertent errors are possible.
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