Not necessarily related, but likely connecting in some way:
Also from this same source by Walter Eliot Thwing:
A daughter of Alvi Tabor Thwing married a Charles C. Chapin, of Bellows Falls, Vermont. [as of 1883] (Alvi was born in Topsham, Vermont, on Feb. 9, 1811
[from page 122]
And on page 139 re read the following::
"James Thwing Hale married Alice Buchner, May 16, 1876. She was born in Canada in 1845. When he was about twenty-three years old, he entered the employ of Chapin & Collins, who had a large saw-mill in Somers, Conn., and, after working there six months, he took entire charge. Chapin sold out, but he remained there until the spring of 1861, when he removed to the state of New York, and worked in various places until the fall of the same year, when he enlisted in what he supposed to be a company of sharpshooters, to be attached to the Eagle Brigade, about to be raised by Gen. G. A. Scroggs. His company was to be raised by Joshua Lee. Neither company, regiment nor brigade were raised, but he and his fellow soldiers were sold to Charles E. Morse, who commanded Company I, 100th Reg. N. . Volunteers. They were at Fort Porter, just out of he city of Buffalo, until March 8, 1862, when they left for the seat of war, passing through Albany, New York City and Washington. He was appointed corporal in his company, and remained so until he was discharged, his appointment dating from the day of his enlistment, Aug. 9, 1861" [quote continues in detail for another page and a half describing Mr. Thwing's involvement in the war in great detail].