Alexander Richard Duncan was born about 1844 in New Jersey. He died on 31 Jul 1896 in Shelby County, Illinois.
Alexander married Clara J. Summers in 1872 in Northampton County, Pennsylvania. Clara J. Summers (Parents) was born during 1848 in Northampton County, Pennsylvania. She died circa 1898 in Illinois.
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Elizabeth I. Duncan was born on 17 Apr 1875 in Pennsylvania. She died on 2 Sep 1962 in Erie County, New York.
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Josephine E. Duncan was born on 9 May 1877 in Northampton County, Pennsylvania.
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Henrietta Duncan was born on 21 Oct 1879 in Pennsylvania. She died on 8 Sep 1954 in New York.
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Hiram Duncan was born on 16 Jul 1882 in Northampton County, Pennsylvania. He died on 8 Sep 1947 in Erie County, New York.
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Catherine B. Duncan was born on 17 Jul 1885 in Pennsylvania. She died on 22 Sep 1949 in Erie County, New York.
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Peter Paul Duncan was born in 1889 in Shelby County, Illinois. He died on 28 Mar 1963 in Erie County, New York.
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George M. Duncan was born in 1891 in Illinois. He died on 3 Nov 1972 in Erie County, New York.
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Caroline J. Duncan was born in 1895 in Illinois.