July 1837
D. D. Egery came to Beloit (with the New England Company) and settled in Turtle.
BeloitGrade A · 1 independent source
The evidence
“same year ; Charles Tuttle, New York, Clinton, April, 1837 ; R. P. Crane, New Hampshire, Beloit, March, 1837; D. D. Egery, Vermont, Turtle, July, 1837 ; Erastus Giles, Vermont, Turtle, October, 1836 ; Henry Tuttle, New York, Clinton, October, 1837 ; William Jack, Lower Canada, Beloit, October, 1837; S.”
1908-brown-rock-county/31-smaller-cities-villages-towns.md, Vol. 2, PDF p. 206 / book p. 710
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