4181C
Calvin C Sedgwick  [Seth Sackett Sedgwick / Charlotte Adams]
b. June 27, 1821, New York
d. January 21, 1904, Sauk County, Wisconsin3
bu Reedsburg, Sauk, Wisconsin Greenwood Cemetery
m1 abt 1844, New York, Harriet N Webb
m2 March 10, 1898, Woodstock, Richland, Wisconsin, Sarah (Smith) Jones4a

Harriet N Webb  [Parents Unknown]
b. January 1, 1829, New York
d. May 16, 1895, Sauk County, Wisconsin
bu Reedsburg, Sauk, Wisconsin Greenwood Cemetery

Sarah (Smith) Jones  [Stephen Smith / Lydia Unknown]4a
m1 Unknown Jones
m2 March 10, 1898, Woodstock, Richland, Wisconsin, Calvin C Sedgwick4a

Census Records:

1850 WI Dodge, Rubicon
1860 WI Sauk, Washington
1870 WI Sauk, Washington
1880 WI Sauk, Washington
1900 WI Sauk, Washington

Some have shown Calvin's date of birth as 1822, but in the 1900 census he gave June 1921, and his grave says June 27, 1821.

Wife Harriet is with Calvin at the 1880 federal census. He is alone in the 1895 state census. In the 1900 federal census, he states he is married 2 years, but no wife present.

Calvin Sedgwick and Harriet Sedgwick were "removed by letter" from the church at Augusta Station, Oneida County, New York ("forerunner of the Knoxboro Methodist Episcopal Church"), Oriskany Falls Class 1847. -Church Record for Augusta Station: Bible, Church and Cemetery Records, Oneida Chapter DAR Vol 8 page 288, at Oneida County Records Office, Utica, New York

Children:

George Westley Sedgwick (4181C1)
  b. December 18, 1845, New York
  d. November 29, 1856, Sauk County, Wisconsin
  bu Reedsburg, Sauk, Wisconsin Greenwood Cemetery
Harriet Sedgwick (4181C2)
  b. abt 1849, Wisconsin
Eliza Sedgwick (4181C3)
  b. abt 1850, Wisconsin
James C Sedgwick (4181C4)
  b. September 30, 1851, Neosho, Dodge, Wisconsin6
  m. June 26, 1868, Sandusky, Sauk, Wisconsin, Nancy Waters6
  bu Reedsburg, Sauk, Wisconsin Greenwood Cemetery
Edward C Sedgwick (4181C5)
  b. December 1856, Wisconsin5
  d. December 18, 1941, [Reedsburg], Sauk, Wisconsin5
  bu Reedsburg, Sauk, Wisconsin Greenwood Cemetery
  m. September 14, 1884, [Sauk County], Wisconsin, Mary Newell4b,5
Mary Jane Sedgwick (4181C6)
  b. abt 1858, Wisconsin
Della Sedgwick (4181C6)
  b. May 30, 1862, Sauk County, Wisconsin
  d. September 28, 1865, Sauk County, Wisconsin
  bu Reedsburg, Sauk, Wisconsin Greenwood Cemetery

More about Calvin C Sedgwick:

NHCHS collection Box 6 Folder I sheet 19

Sources:

1. The Sedgwick Collection (MSS B46) at the New Haven Colony Historical Society papers of Hubert Merrill Sedgwick, Francis Morris Sedgwick and Frederick J Sedgwick,
genealogists of the family of Robert Sedgwick (1613 - 1656)

2. Census records, any of those indicated.

3. Wisconsin Deaths, 1820-1907
an Ancestry.com database.
Name: Calvin Sedgwick   Death Date: 21 Jan 1904
County: Sauk   Volume: 02   Page #: 0246
Reel: 121   Image: 1738   ImageNum: 104850   Sequence #: 352339

4. Wisconsin, Marriages, 1836-1930
a FamilySearch.org database
URL a: https://familysearch.org/pal:/MM9.1.1/XRP6-8T2
URL b: https://familysearch.org/pal:/MM9.1.1/XR66-TLN

5. Find A Grave burial record

6. The History of Sauk County, Wisconsin page 769
Western Historical Company, Chicago 1880
acccessed at The Internet Archive http://archive.org
http://www.archive.org/download/historyofsaukcou00west/historyofsaukcou00west.pdf
"JAMES C. SEDGWICK, cooper. Sandusky ; son of Calvin C. and Harriet N. (Webb) Sedgwick; born in Neosho, Dodge Co., Wis., Sept 30, 1851; in 1856, the family moved to Reedsburg, Sauk Co.; in a few years, changed to Excelsior; and, in 1861, came to the town of Washington, settled on Sec. 8, and, one year later, on Sec. 10. Mr. Sedgwick was married in Sandusky, June 26, 1868, to Nancy Waters, daughter of Daniel and Caroline (Walker) Waters; Mrs. Sedgwick was born in Springfield, Ohio; they have an adopted daughter - Nettie L. Mr. Sedgwick made his home in Sandusky in 1866, where he now resides; has 40 acres of land in Sec. 9; he has served as Clerk of his school district one year, and Director three years."