In brief

Born about 1600/1609 in England. 1633: England to USA. He died about 1676 in Killingsworth, Connecticut.

Family

Spouse
Hester ____

Children

  • Priscilla Kelsey
    b. c. 1632
    m. Cornelius Gillett (brother of Jonathan Gillett (1551)) around 1658
  • Mark Kelsey
    b. Abt. 1634
    m. Rebecca Hoskins, March 8, 1658[1659], in Windsor, Connecticut
    m. Abigail ____, December 26, 1683, in Windsor, Connecticut
  • Hester Kelsey
    b. Abt. 1636
    m. April 29, 1680, in Windsor, Connecticut
    d. July 20, 1720, in Windsor, Connecticut
  • John Kelsey
    b. Abt. 1638
    m. Hannah Desborough in 1668
    d. July 22, 1709, near Killingworth, Connecticut
  • Abigail Kelsey
    b. April 19, 1645, in Hartford, Connecticut
    m. John Hull, December 3, 1668, in Killingworth, Connecticut
    d. May 12, 1717, in Killingworth, Connecticut
  • Stephen Kelsey
    b. November 7, 1647, in Hartford, Connecticut
    m. Hannah Ingersoll, November 15, 1672, in Wethersfield, Connecticut
    d. November 30, 1710, in Hartford, Connecticut
  • Daniel Kelsey
    b. July 6, 1650, in Hartford, Connecticut
    m. Mary Stevens, March 27, 1672, in Killingworth, Connecticut
    m. Jane Chalker
    d. June 5, 1727
  • Mary Kelsey · in this line
    m. Jonathan Gillett, April 23, 1661, in Windsor, Connecticut
    d. April 18, 1676, in Windsor, Connecticut

Life story

From Cambridge to Killingworth

William Kelsey emigrated from England to Massachusetts in 1633, settling first in Cambridge before moving to Hartford, Connecticut, by 1635, where he assembled more than twenty parcels of land over the following decades — though as of 1636 he was still unable to sign his own name. He served Hartford as a selectman in 1659 and 1661, and around 1664 moved on again to help found Killingworth (now Clinton), Connecticut, becoming one of its original proprietors and, in 1671, the town's deputy to the Connecticut General Court. He gave his Hartford home to his son Stephen when he left for Killingworth, and in 1674 divided further land there between his sons John and Daniel. William was among the founding members of Killingworth's church and, in 1674, became its first donor, pledging twenty shillings a year for the rest of his life. He died around 1676 in Killingworth; his will was presented to the New London County Court that September.

Sources (2)
  1. Robert Charles Anderson, The Great Migration Begins: Immigrants to New England 1620-1633, 3 vols. (Boston, Massachusetts: New England Historic Genealogical Society, 1995), 2:1117-1119; digital images, Ancestry (https://www.ancestry.com/imageviewer/collections/2496/images/42521_b158319-00442 : accessed 4 August 2026).
  2. Edward A. Claypool, Azalea Clizbee, and Earl Leland Kelsey, A Genealogy of the Descendants of William Kelsey, 3 vols. (New Haven, Connecticut: The Tuttle, Morehouse & Taylor Company, 1928), 1; digital images, Ancestry (https://www.ancestry.com/imageviewer/collections/10330/images/dvm_GenMono000167-00001-1 : accessed 4 August 2026).