May 14, 1822
Birth of a son of E. C. (surname not given in the passage) in Lancaster County, Pennsylvania (later a Beloit resident).
Nation and worldGrade A · 1 independent source
The evidence
“P. 0. Beloit; born in Lancaster Co., Penn., May 14, 1822 ; son of E. C.”
1879-history-of-rock-county/23-bios-turtle.md, PDF p. 803
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