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Jan Olyslager (born 1926) Netherlands
Eugeniusz Zygfryd Olzewski (1924 - 2011) Switzerland, Germ...
Billy Omabegho (born 1953)
Mical O'Maher (mid 20th century) United States
Michael O'Mahoney California
Jen Omaitz (born 1979) Colorado, Ohio
Zuka Booyakovitch Omalev (mid 20th century) California
Helen A O'Malley (1864 - 1949) California
James O'Malley (mid 19th century) New York
Jane O'Malley (born 1944) Ireland
Joseph Melvin O'Malley (1903 - 1991) California, Illinois,...
Mary O'Malley (20/21st centuries) Massachusetts, New York
Mary O'Malley (21st century) New York / United Kingdom
Mary Holmes O'Malley (born 1910) Iowa, South Dakota
Michael Augustin Power O'Malley (1870 or 77 - 1946) New Yo...
Nellie A O'Malley (born 1865) California / Canada
Pamer O'Malley
Power O'Malley (1870 or 77 - 1946) New York, California /...
Tony O'Malley (1913 - 2003) England, Ireland
Tony O'Malley (born 1962) Ireland
Julia O'Malley-Keys (20/21st century) United States
Joseph M O'Mally (1903 - 1991) California, Illinois, Ohio
Cyril Omamogho (born 1983)
Edwin Louis Oman (1905 - 1985) Illinois, New York
Sheridan Oman (1926 - c.1995) Arizona, New Jersey
Valentin Oman (born 1935) Austria
Alfredo Omana (born 1968) Italy
Jose Ignacio Cervantes Omana (born 1968) Mexico
Edwin L Omankowski (mid 20th century) United States
Amron Omar (born 1957) Malaysia
Hamdan Omar (21st century) Indonesia
Madiha Omar (1908 - 2005) Syrian Arab Republic, Iraq
Margit Omar (born 1941) California
Michael O'Mara (20th Century)
Thomas W O'Mara (flourished 1900, Kansas City) Kansas
Abdalla Omari (born 1986) Syrian Arab Republic
Ilham Laraki Omari (born 1979)
Tony Ombler
Pierre Omcikous (born 1926) France, Former Yugoslavia
Kate Chamness O'Meallie (born 1916) South Carolina, Louisi...
Kitty O'Meallie (born 1916) South Carolina, Louisiana
Sean O'Meallie (born 1955) Colorado, Louisiana
Frank O'Meara (1853 - 1888) France, Ireland
Patrick O'Meara (late 18th century) United States
Richard O'Meara (born 1946)
Lyle Omeasoo (born 1972) North Dakota
Fiona Omeenyo (born 1981) Australia
Laurence Omeenyo Australia
Filippo Omegna (1881 - 1948) Italy
Jay O'Meilia (born 1927) Oklahoma
Philip (Jay O'Meilia) O'Meilia (born 1927) Oklahoma
Felix Louis Omelich (1896 - 1983) California / Hungary
Omen (20/21st century) Canada
Eugenio Omencini (born 1939) Italy
John Jacob Omenhauser
Frank W Omensetter (born 1853) Pennsylvania
Charles Omer (19th Century)
Franck Omer (born 1974) France
Francois Omer (born 1885)
Nouli Omer (born 1960)
Rakefet Viner Omer (born 1965) Israel
Georges Omerth (fl.1895 - 1925) France
Sylvie Ometz (born 1961)
Alfonso Omiccioli (1923 - 2004)
Giovanni Omiccioli (1901 - 1975) Italy
Fereydoun Omidi (born 1967) Iran, Islamic Republic of
Klara Bockayova Omiliakova (born 1948) Czech Republic, Slo...
Seikan Omine (1910 - 1987) Japan
Steve H Ominski (born 1952) Oregon
Frank K Ominsky (1898 - 1981) New York, Connecticut
Rachel Ominsky (1896 - 1941) New York
Giuseppe Omio (1881 - 1955) Italy
Reinhard Omir (born 1938) Germany
Peter Omlor (born 1947) United States
George Ommanney (fl.1912 - 1917) United Kingdom
Oliver Ommanney United Kingdom
Balthasar Paul Ommeganck (1755 - 1826) Flemish, Belgium
Maria Jacoba Ommeganck (1760 - 1849) Belgium
James Omnik (20th century) Alaska
Seiju Omoda Japan
Ayoola Omogbolahan (born 1977) Nigeria
Paul Hardwicke Omohundro (1915 - 2004) California, Nevada
Mike Omoighe (born 1958)
Kazuo Omori
Mitsumoto (Kogen) Omori (19th century) Japan
Sakuei Omori Japan
Shogo Omori (20/21st century) Japan
Anthony Omoroso (mid 20th century) United States
Ayoola Omovo (born 1980)
Mohammad Omran (21st century)
Younes Omrane (born 1971) Syrian Arab Republic
Nengi Omuku (born 1987) Nigeria
Suzy O'Mullane (born 1958) Ireland, France
William O'Mullin (born 1837) New York
Koyo Omura Japan
Taiun Omura Japan
Yuichiro Omura (21st century)
Domhnall O'Murchadha (1914 - 1991)
Eo Omwake (born 1946) Pennsylvania
Leon Jr Omwake (born 1946) Pennsylvania
William Omwake (born 1946) Pennsylvania
Lekan Onabanjo (born 1957) Nigeria
Aina Onabolu (1882 - 1963) Nigeria
Olumide Onadipe (born 1982)
Yoshimatsu Onaga (born 1890) Pennsylvania / Japan
Stanley Casimer Onaitis (1910 - 1984) California
Promise Onali (born 1982)
Lucassie Onalik (born 1964) Canada
Tommy Onalik (born 1929) Canada
Potxo Onandia
Jacqueline Kennedy Onassis (1929 - 1994) New York
Hikmet Onat (1882 - 1977) Turkey
Tulin Onat (born 1943)
Henry Onate (early 20th century) California / Mexico
Cesar Hombrados Onativia (1902 - 1978) Spain
Koshiro Onchi (1891 - 1955) Japan
Kim Ondaatje (born 1928) Ontario / Canada
Roman Ondak (born 1966)
Pieter Jan Onderberg (1821 - 1890) Netherlands
Charrie Onderdonk (20th Century)
Edna V Onderdonk (1889 - 1972) California, Nebraska
Eleanor Rogers Onderdonk (1884 - 1964) Texas
Forman Onderdonk (1919 - 1933)
Julian (Robert Julian) Onderdonk (1882 - 1922) Texas, New ...
Percy Onderdonk (1878 - 1927) New York
Robert Jenkins Onderdonk (1852 - 1917) Texas, Maryland
S Cecilia Onderdonk (mid 20th century) New York
Walter Onderka (1950 - 2009) Germany
Hendrik Theodorus de Court Onderwater (1877 - 1905) Hollan...
Paul Onditi (born 1980) South Africa
Vit Ondracek (born 1959) Czech Republic
Karol Ondreicka (1904 - 1971) Czech Republic
Peter Ondreicka (born 1947) Czech Republic
G Ondriachiani (20th century)
Igor Ondrus (born 1972) Czech Republic
Franz Ondrusek (1861 - 1932) Hungary
Peter Ondrusek (born 1973) Czech Republic
Jon One (born 1963) New York / France
Kay One (born 1973)
Mear One (born 1971) California
Semet One
Alex O'Neal (born 1957) United States
Charles Lyman O'Neal (1880 - 1940) California
Elaine Hamilton O'Neal (1920 - 2010) Maryland / Asia
Frank E O'Neal (1921 - 1987) Pennsylvania, Missouri
George Washington O'Neal (20th Century) North Carolina
Greg O'Neal (20th/21st Century) Oregon
Ike O'Neal North Carolina
James O'Neal (born 1833) New York
James O'Neal (20th Century) Massachusetts
James Knox O'Neal (1848 - 1922) Nebraska, Ohio
Kenneth Roderick O'Neal (born 1908) Missouri
Mary O'Neal (late 19th century) California
Mary Lovelace O'Neal (20/21st century) California
Robert Benjamin O'Neal (20th Century) North Carolina
Wallace O'Neal North Carolina
William Bainter O'Neal (born 1907) Virginia, Ohio
Jose Luis Onecha (born 1955)
John O'Neel (born 1835) Pennsylvania
Agnes O'Neil (19/20th century) Ohio
Bruce William O'Neil (born 1942) Canada
David J O'Neil (mid 20th century) New Jersey
Genevieve O'Neil (mid 20th century) United States
Henry Nelson O'Neil (1817 - 1880) United Kingdom, England
James O'Neil (20th Century) Massachusetts
James Knox O'Neil (1848 - 1922) Nebraska, Ohio
John O'Neil (1915 - 2004) Oklahoma, Texas, Kansas, Missou...
John O'Neil (mid 20th century) Minnesota
Karen O'Neil (born 1960) New York, Massachusetts
Kathy O'Neil (20th Century) Massachusetts
Robyn O'Neil (born 1977) Texas, Nebraska
William O'Neil (born 1834) New York, Connecticut
William J O'Neil (20th century) Ohio
Rose Cecil ONeill (1875 - 1944) New York, Missouri
Alice O'Neill (1891 - 1984) California
Amy O'Neill (born 1971) Pennsylvania
Betty O'Neill
Brian O'Neill
Dan O'Neill (20th century) United States
Dan O'Neill (born 1955) Canada
Daniel O'Neill (1920 - 1974) Ireland, United Kingdom, Eng...
Desmond O'Neill (20th century) United States
Don O'Neill (1924 - 2007) California
Frank Elisha O'Neill (1893 - 1980) California
Frank Jack O'Neill (early 20th century) United States
Gay O'Neill (born 1946)
George Bernard O'Neill (1828 - 1917) Ireland
George D O'Neill (20th Century) Florida
George Kerr O'Neill (born 1879) Pennsylvania
Geraldine O'Neill (born 1971) Ireland
Harry O'Neill (20th Century)
Henry O'Neill (1817 - 1880) United Kingdom, England
Hugh O'Neill (1784 - 1824) United Kingdom
Hugh O'Neill (born 1959) Florida / Ireland
JG O'Neill (late 19th century) California
JJ O'Neill (20th/21st century)
James Knox O'Neill (1848 - 1922) Nebraska, Ohio
Joan O'Neill (1828 - 1907) Spain
John O'Neill (born c. 1835) Pennsylvania
John O'Neill (early 20th century) New York
John O'Neill (1915 - 2004) Oklahoma, Texas, Kansas, Misso...
John A O'Neill (born 1837) New Jersey, District Of Columbi...
John Louie O'Neill
John P O'Neill (born 1942) Louisiana
Ken O'Neill (born 1967)
Ken O'Neill (20th/21st century)
Kevin O'Neill (born 1953) United Kingdom
Lee O'Neill (1877 - 1967) California, Nebraska
Liam O'Neill (born 1954) Ireland
Mari Mater O'Neill (born 1960) New York / Puerto Rico
Maria de Mater O'Neill (born 1960) New York / Puerto Rico
Marion O'Neill (20th century) California
Mark O'Neill (born 1963) Ireland, England
Mary O'Neill (- 1987) United Kingdom
Michael O'Neill (born 1930) Ireland
Niall O'Neill (born 1952) Ireland
Nigel O'Neill
Peter O'Neill (20th century) Ireland
Raymond Edgar O'Neill (1893 - 1962) New Jersey
Rose Cecil Latham O'Neill (1875 - 1944) New York, Missouri
Ruth Heilprin Hammerslough O'Neill (1883 - 1983) District ...
Terry O'Neill (born 1938) United Kingdom
Thaddeus O'Neill (born 1945) Ireland
Thomas F O'Neill (1852 - 1922) Maine
Tom O'Neill (born 1950) United Kingdom
Juan O'Neill Y Rosinol (1828 - 1907) Spain
Mairead O'Neill-Laher (21st Century) Ireland
Lionel Paul Onel (born 1966) Haiti
Onemizer (born 1987)
Pasta Oner (born 1979)
Giacomo Onestini (1934 - 2003) Italy
Joseph A Oneto (1911 - 1981) California
Luigi Onetti (1876 - 1968) Italy
Job Onfroy de Breville (1858 - 1931) France
Donna Ong (born 1978) Singapore
Emma Zella Ong (1902 - 1955) California, Nebraska
Jimmy Ong (born 1964) Singapore
Kim Seng Ong (born 1945) Singapore
Mira A Ong (1900 - 1993) California, Nebraska
Wilson Jay Ong (born 1958) Utah
Umberto Ongania (1860/65 - 1896?) Italy
Athos Ongaro (born 1947) Italy
Joseph Ongenae (1921 - 1993) Belgium
Jan Onghers (1656 - 1735) Holland
James Onglepho (born 1935) Philippines
William Ongley (1836 - 1890) New York / England
Lawrence N Ongman (born 1898) California / Sweden
Umberto Ongonia (1875 - 1896?) Italy
Chief Gabriel Oni-Okpaku (1938 - 1977) Nigeria
Alexandr Onishenko (born 1957) Czech Republic, Ukraine
Jimmy Onishi Japan
Shigeru Onishi (born 1928) Japan
Carl Eduard Onken (1864 - 1934) United States, Germany
E Onken (19/20th Century) Germany
Otto Onken (born 1815) United States, Germany
Nico Onkenhout (1918 - 1989) Netherlands
Marie Onken-Palme (1871 - 1951) Austria
Theodoor Onkruid (1707 - 1771) Netherlands
Norman Anthony (Toni) Onley (1928 - 2004) British Columbia...
Toni Onley (1928 - 2004) British Columbia / Canada
William Henry Onn (1902 - 1989) California, Nevada
Gerrit Onnen (1873 - 1948) Germany
Harm Henrick Kamerlingh Onnes (1893 - 1985) Netherlands
Menso Kamerlingh Onnes (1860 - 1925) Netherlands
Chikkyo Ono (flourished c.1924-1937) Japan
Gosei Ono Japan
Gutei Ono Japan
Hidetaka Ono Japan
Hiroko Ono Japan
Hokusai Ono (20th Century) Japan
Itsuo Ono Japan
Kazunori Ono (born 1941)
Kyoji Ono Japan
Masakichi Ono Japan
Ryutoku Ono (20th Century) Japan
Shizukata Ono Japan
Shuichi Ono (20th Century) Japan
Sue Ono (20th century) Japan
Tadashige Ono (1909 - 1990) Japan
Takao Ono (born 1950) Japan
Toshiaki Ono
Toshihiro Ono (born 1965)
Tozaburo Ono Japan
Yoko Ono (born 1933) New York / Japan
Bruce Onobrakpeya (born 1932) Nigeria
Ufuoma Onobrakpeya (born 1971) Nigeria
Haru Onoda (born 1929) Japan
Minoru Onoda (1937 - 2008) Japan
Bela Onodi (1900 - 1981) Hungary
Pedro Onofre Cotto (1669 - 1713) Spain
Mihai Onofrei (1896 - 1980)
Crescenzio Onofri (1632 - 1698) Italy
Vincenzo Onofri (1470 - 1525)
Domingo Onofrio (1925 - 2007) Argentina
Gaku Onogi (20th Century) Japan
Manabu Onoki (1924 - 1976) Japan
Gustavo Onorato (born 1969)
Manlio Onorato (born 1951) Italy
Umberto Onorato (1898 - 1967) Italy
Toshinobu Onosato (1912 - 1986) Japan
Soren Onsager (1878 - 1946) Norway
Ulf Onsberg (born 1932) Sweden
Omar Onsi (1901 - 1969) Lebanon
Edouard Amable Onslow (19th century) France
Richard Onslow (20th century) England
Edward Onslow-Ford (1852 - 1901) United Kingdom, England
Gordon Onslow-Ford (1912 - 2003) California
Rudolph Onslow-Ford (fl.1880 - 1914) United Kingdom
Wolfram Onslow-Ford (1879 - 1956) United Kingdom
Kemal Onsoy (born 1954) Turkey
Albert Bernhard Onstad (1895 - 1981) Sweden
Penny Onstatt (1941 - 1993) California
Luigi Ontani (born 1943) Italy
Santiago Ontanon Fernandez (1903 - 1989) Spain
Nahum Ball Onthank (1823 - 1888) Massachusetts
Damian Ontiveros (20th/21st Century)
Gwen Annette Ontiveros (1941 - 2016) California
Martin Ontiveros (born 1969)
Sophie Wall Onton (born 1907) New Jersey
Aurore Onu (20th century)
Natalia Onufrieva-Pshenetskaya (1875 - 1911)
Nachiko Onukai (20th century) Unknown Country
Masanosuke Onuki (mid 20th century) Japan
Teruo Onuma (born 1933) Japan
Donald Onuoha (born 1973)
Chike Onuorah (born 1967) Nigeria
Irfan Onurmen (born 1958) Turkey
Izzet Arda Onursan (born 1959) Turkey
Lin Onus (1948 - 1996) Australia
Nyemike Onwuka (born 1972) Nigeria
Richard Onyango (born 1960) Africa
Derek Oobagooma Australia
Fabien Oogaaq (1923 - 1992)
Sakujiro Ookubo (20th Century) Japan
Jacob Oolen (1631/36 - 1694) Germany
Orpha Ooley (1891 - 1964) California, Iowa
Isa Oomayoualook (1915 - 1976) Canada
Joanassie Oomayoualook (born 1934) Canada
Othniel A Oomittuk (born 1964) Oregon, Alaska
Charles Ooms (1845 - 1900) Belgium
Karel Ooms (1845 - 1900) Belgium
Jessie Oonark (1906 - 1985) Manitoba, Nunavut / Canada
Ilkok Oopakak (born 1917) Canada
Jackoposee Oopakak (born 1948) Canada
Temela Oopik (born 1946) Canada
Willem Oordt (born 1635)
Joseph Philippe Oorloft (1793 - 1861) Belgium
Marc Oorlynck (20th Century)
Theodorus van Oorschot (1910 - 1989) Netherlands
Adri Bleuland Oort (1864 - 1948)
Hendrik Van Oort (1775 - 1847) Netherlands
Jacob Van Oost the Elder (1601 - 1671) Belgium
Jacob Van Oost the Younger (1639 - 1713) Belgium
Vann Nettie Green Oostdam (1908 - 1981) California
Isaac Van Oosten (1613 - 1661)
Thomas Teekes Oostenga (1812 - 1865) Netherlands
Gerrit Abraham Oosterbaan (1832 - 1893) Netherlands
Anna Gerdes Oosterbeeck (born 1902)
Willem Oosterdijk (17th Century) Holland
Daniel Oosterhoudt (1781 - 1850)
Dirk Oosterhoudt (1756 - 1830)
Haatje Pieters Oosterhuis (1784 - 1854) Netherlands
Gregorius Oosterlynck (17th century) Netherlands
Jean Emile Oosterlynck (1915 - 1996) Belgium, France
Ernestine Lechner Oosterman (1895 - 1967) Netherlands
Maria Oosterwyck (1630 - 1693) Unknown Country, Netherlan...
Jeanne Bieruma Oosting (1898 - 1994) Netherlands
Frederik Amalius Oostveen (1885 - 1979) Europe
Rietje Oostvogels Netherlands
Catharyna Oostvries (1636 - 1708) Netherlands
William Oothout (1856 - 1927) California
Thomas Oovayuk (born 1938) Canada
Takashi Oozuchi (20th/21st Century) Japan
Carry op ten Noort (born 1943)
Jan Opalinski (born 1956) Poland
Roman Opalka (1931 - 2011) France, Italy
Karel Opatrny
Jorge Opazo (born 1970) Chile
Rodolfo Opazo (born 1935) Chile
Carol Opdahl California
Ornulf Opdahl (born 1944) Norway
Gage Opdenbrouw (20/21st century) California
George Willem Opdenhoff (1807 - 1873) Netherlands
Damilola Moses Opedun (born 1983)
Byron Openshaw (1914 - 1978) California, Idaho
Joseph Byron Openshaw (1914 - 1978) California, Idaho
Olive P Openshaw (Mid 20th Century) United Kingdom
Albert Jaspar Ludwig Roccabiglera Operti (1852 - 1927)
Gustav Opfer (1876 - 1957) Germany
Karl Opfermann (1891 - 1960) Germany
Ivan Opffer (1897 - 1980) United States
Peter Opheim (born 1961) Germany
Shmuel Levy Ophel (1884 - 1966) Israel
Jan Peter von Opheusden (born 1941) Netherlands
Walter Ophey (1882 - 1930) Germany
Gilad Ophir (born 1957) Israel
Ronald Ophuis (born 1968) Netherlands
Alfred Opie (19th century)
Catherine Opie (born 1961) California, Ohio
Edward Opie (1810 - 1894) United States
Everett Opie (born 1947) United States
John Opie (1761 - 1807) United Kingdom
John Mart Opie (born 1936) Pennsylvania
Julian Opie (born 1958) England
Roy Opie (1909 - 1968) Australia
Susan Opie (20/21st century) Pennsylvania
Nicolas Opiok (born 1934)
Alfred Opisso i Cardona (1907 - 1980) Spain
Ricardo Opisso Sala (1880 - 1966) Spain
Antonia M Opitz (1884 - 1905) California
Ferdinand Opitz (born 1885) Czech Republic
Franz Karl Opitz (1916 - 1998) Switzerland
Fritz Opitz (1911 - 1987) Austria
Georg Emanuel Opitz (1775 - 1841) Germany, France
Johann Adolph Opitz (1763 - 1825) Germany
Marge Opitz (20th Century) United States
O Opitz (20th Century) Germany
Regina Opitz (1943 - 1999) Germany
Werner Opitz (born 1942) Italy
Wolfgang Opitz (born 1944) Germany
Ingrid Opitz-Axterer (born 1941) Poland
Georg Emanuel Opiz (1775 - 1841) Germany, France
Gordon (Maybel) Opler (born 1910) New York
Oldrich Oplt (1919 - 2001)
Katerina Opltova (1957 - 2003) Czech Republic
Pavel Opocensky (born 1954)
O'Poil (born 1982) France
Sandra Oppegard (born 1941) United States
Adolf Oppel (1874 - 1922)
Gustav Oppel (1891 - 1978) Germany
Lisel Oppel (1897 - 1960) Germany
Marianne Oppelt (1898 - 1995) Germany
Levinus Petrus Oppen (1764 - 1837) Netherlands
Adeline Oppenheim (born 1872) United States
Alfred Nathaniel Oppenheim (1873 - 1953) Germany
Annemarie Oppenheim (1904 - 1991) South Africa
Dennis Allan Oppenheim (1938 - 2011) New York, California
G Eric Oppenheim Unknown Country
Guido Oppenheim (1862 - 1942) Luxembourg
Kristin Oppenheim (born 1959) United States
Max Oppenheim (1885 - 1954) New York / Austria, Germany
Meret Oppenheim (1913 - 1986) Switzerland
Moritz Daniel Oppenheim (1800 - 1882) Germany
Robert Oppenheim (20th Century) United States
Rosetta Oppenheim (mid 19th century) Michigan
Rudolf Oppenheim (19/20th century)
Samuel Edmund Oppenheim (1901 - 1992) New York
Silvio Oppenheim (20th Century)
Yves Oppenheim (born 1948) France
Babs (Babette) Oppenheimer (mid 20th century) New York
C J Oppenheimer (born 1890) United States
Charles Oppenheimer (1875 - 1961) United Kingdom
Emy Oppenheimer (born 1890) New York
Harriet L Oppenheimer (mid 19th century) New York
Jonny Oppenheimer (1923 - 2005) Sweden
Josef Oppenheimer (1876 - 1966) Quebec / Germany, Canada
Joseph (Josef) Oppenheimer (1876 - 1966) Quebec / Germany,...
Mary Close Oppenheimer (born 1951) New York, Connecticut
Maurice H Oppenheimer (early 20th century) United States
Max (Mopp) Oppenheimer (1885 - 1954) New York / Austria, G...
Selma L Oppenheimer (1898 - 1988) Maryland
Edith Oppenheim-Jonas (1907 - 2001) Switzerland
Willem Oppenoorth (1847 - 1905) Netherlands
Gilles Marie Oppenordt (1672 - 1742) France
Gilles Oppenort (1672 - 1742) France
Frederick Burr Opper (1857 - 1937) Ohio
Jerry Opper (1924 - 2014) California
John Opper (1908 - 1994) New York, North Carolina, Illino...
Laura Opper (1873 - 1924) New York
William A Opperman (flourished 1920s, Lawrence) Kansas
Anna Oppermann (1940 - 1993) Europe
C H N Oppermann (c.1760 - c.1817) Germany
Johanna Luise Oppermann (born 1860) Denmark
Karl Oppermann (born 1930) Germany
Karl Ludwig Oppermann (1798 - 1881) Switzerland
Wilhelm Ulrich Oppermann (1786 - 1852) Switzerland
Willi Oppermann (born 1889) Germany
Wolfgang Oppermann (1937 - 2001) Germany
Ubaldo Oppi (1889 - 1942) Italy
Aldo Oppici
Wilhelm Oppitz (born 1874)
Otto Oppl (1887 - 1966)
Alexander Oppler (1869 - 1939) Germany
Ernst Oppler (1867 - 1929) Germany
Ernst Oppliger (born 1950)
Willi Oppliger (born 1933)
Cipriano Efisio Oppo (1891 - 1962) Italy
Efisio Oppo (1891 - 1962) Italy
Giorgio Oprandi (1883 - 1963) Italy
Ovidiu Oprea (1958 - 2007)
Juraj Oprsal (born 1953)
Isidore Opsomer (1878 - 1967) Belgium
Adolf Anderson Opstad (early 20th century) Illinois
Gaspard Jacob van Opstal (1654 - 1717) Netherlands
Kaspar Jacob Opstal (1654 - 1717) Netherlands
Opuol Um (20th Century) United States
Roelofje Van Opzeeland (20th Century)
Evarist Opzommer (1910 - 1988)
Adele Sophie Cordilia Opzoomer (1856 - 1925) Netherlands
Simon Opzoomer (1819 - 1878) Netherlands
      
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