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Name: Ignatius Sigmond Derkowski
Birth: 4 December 1915 Schenectady, Schenectady, New York, United States
Death: January 1978 Schenectady, Schenectady, New York, United States
Father: John Derkowski
Mother: Josephine Bartosiewicz
Name: Ignatius Vincent Derkowski
Birth: 26 Jan 1909 Troy, Rensselaer County, New York
Death: 29 Nov 1984 Boynton Beach, Palm Beach, Florida, United States of America
Father: Stefan Stephen Derkowski
Mother: Rosalia "Rose" Martens
Name: Ignatius Derkowski
Birth: June 1865 Germany/Poland
Death: 1935/01/13 Chicago, Illinois
Father: Antonius Derkowski
Mother: Apolonia Woznick
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