"United States Census, 1850," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M4CV-C1M : accessed 25 Sep 2014), William Duane in household of Samuel Brooks, Philadelphia, Locust ward, Philadelphia, Pennsylvania, United States; citing family 114, NARA microfilm publication M432.
The New England Historical and Genealogical Register. Boston, MA: New England Historic Genealogical Society, 1847-. (Online database: AmericanAncestors.org, New England Historic Genealogical Society, 2001-2013.)
William Arba Ellis, ed., Norwich University, 1819-1911: Her History, Her Graduates, Her Roll of Honor (Montpelier, Vermont: The Capital City Press, 1911), 2:104.
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DNA Connections
It may be possible to confirm family relationships with William by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with William: