Birth Chronology and Rationalization of Earliest Onans
and
List of immigrant Onans

• Birth year calculated from census information or (other) as noted.
• NOTE: A birth year computed from age on the census can be in error by as much as plus or minus 3 years depending on the birth date of the person and the date of the census. Age on a census is as of the date the enumerator makes the query.

CENS0001 US census 1830, NY, Tompkins co, abs, dates <> 5 years
CENS0002 US cennus 1850, NY, towns of Ithaca and Dryden, Tompkins co, abs
CENS0017 US census 1860, NY, town of Weston, Marathon co, abstract
CENS0018 US census 1870, WI, Marathon co, abs.
CENS0019 US census 1870, WI, Portage co, abs.
CENS0020 US census 1880, WI, Portage co abs.
CENS0021 US census 1850, NY, town of Burton, Cattaraugus co, photocopy
CENS0022 US census 1870, NY, Cattaraugus co, photocopy
CENS0023 US census 1880, MN, Moorhead, Clay co, photocopy * birth year wrong
CENS0024 MN state census 1885, Moorhead, photocopy
CENS0025 MN state census 1885, Moorhead, abs (came Mar 1882)
CENS0029 US census 1910, MI, Kent & Calhoun co, index search abs
CENS0031 US census 1910, NY, town of Niagara, Niagara co, photocopy
CENS0032 US census 1860, NY, town of Dryden, Tompkins co, photocopy
CENS0033 US census 1870, NY, Tompkins co, photocopy
CENS0038 US census 1850, NY, town of Conquest, Cayuga co, abs
CENS0039 NY state census 1855, town of Conquest, Cayuga co, abstract
CENS0040 US census 1850, NY town of Rice, Cataraugus co, photocopy
CENS0041 US census 1850, NY, town of Dryden, Tompkins co abstract
CENS0049 NY state census 1905, town of Franklinville, Cattaraugus co, abs
RESE0085 US census 1850, NY, Tompkins co, abs letter from R. Wheeler

Methodology: Sort census data by Birth Year date and combine records of given names and close birth years to an assumed one person.

24 November, 1998
David W. Onan II