July 7, 1830
Cassoday was born in Herkimer county, New York.
The evidence
“B. C.4SSODAY, was bom July 7, 1830, in Herkimer Co., N. Y.; in early childhood, he and his widowed mother went with her parents to what was then a sparsely settled portion of Tio"a Co.,”
1879-history-of-rock-county/17-bios-janesville.md, PDF p. 695
Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.
Grade A: Found on a page of one of our sources
On the printed page (PDF p. 695) · open the whole page “Cassoday was born in Herkimer county. New York, July 7, 1830. About three years later his father died, and he and his mother moved with her parents to Tioga county, Pennsylvania.”
1908-brown-rock-county/32-courts-and-legal-profession.md, Vol. 2, PDF p. 263 / book p. 764
Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.
Grade A: Found on a page of one of our sources
On the printed page (Vol. 2, PDF p. 263 / book p. 764) · open the whole page