Individual Details

Isaiah remarried soon after the death of Chloe and had at least six other children born in Peacham, Caledonia Co, VT as listed in Vermont, Births and Christenings on FamilySearch.org.

Lewis Pratt, b. 16 Sep 1806
Calvin, b. 17 May 1810
Peter Eaton Pratt, b. 18 Dec 1812
Franklin Pratt, b. 27 Jun 1815
Abigail Eliza Pratt, b. 13 Jun 1821
Mary Jane Pratt, b. 23 Jan 1826

According to a list post, Isaiah died Nov 11, 1843 at Peacham. Second wife was Mary "Polly" Fellows - they married 19 Dec 1805, Weare, Hillsborough Co, New Hampshire.

In 1850, a Susannah Pratt, age 74, born in Vermont, was living in the household of William Pratt, age 46, Stark Co, IL. This is not William's stepmother, unless Isaiah had married for a 3rd time. Some databases do list a Susanna as the 2nd wife with the same marriage date - 19 Dec 1805, but FamilySearch has the New Hampshire marriage and it states "Polly Fellows"

1850 Census, Stark Co IL, Hh 550
Peter E. Pratt, 37, b. Vermont.
Mary, 33, b. Ohio
Born in Illinois: Mary J. 12, Rebecca 10, Isaiah 8, Peter B. F. 6, William H. 4, and Abigail E, age 2.

1860, Penn Twp, Stark Co, IL; P.O Wyoming, Hh 1178
Peter E. Pratt, age 47, Farmer, b. Vermont
Mary, 46, b. Ohio
Born in Illinois: Rebecca 20, Isaiah 18, Franklin 16, William H. 14, Abigail E 12, Charles 9, Mary J. Pratt, age 18, b. Vermont

1870, Toulon Twp, Stark Co, IL; Toulon P.O., Hh 189
Peter E. Pratt, 57, b. VT
Mary, 54, b. Ohio
Born in IL: Isaiah 28, Franklin B. 26, William H. 23, Charles L. 19, James L., 8, and Martha age 20. [Franklin's wife]

Franklin Pratt married Martha Tapp, 17 Jul 1869, Stark Co IL.

Peter E. Pratt married Matilda Adleman, 27 Jan 1874, Stark Co. Illinois Marriage index online.

1880, Toulon, Stark, IL, Hh 47
Peter E. Pratt, 67, Farmer, b. VT, father b. Conn, mother b. NH
Matilda, 55, wife, b. PA, parents b. MD
Isaiah, 38, son, b. IL, father b. VT, mother b. OH
Saml. Adleman, 24, stepson, b. IL, parents b. PA
Jess A., 21, stepson, b. IL, parents b. PA
Rebecca, 26, stepdau, b. IL, parents b. PA
William Pratt, age 6, adoped son, b. IL, parents b. PA

Illinois Death Index on Ancestry has:
Isaiah Pratt, b. 18 Mar 1842, Osceola Twp, Stark, IL
Died Stark, IL, 12 Oct 1922, age 80, buried Osceola Grove
Father was Peter E. Pratt, b. Vermont; mother was Mary Sturm, b. Illinois
He had lived 71 years where death occurred.

Spouse	Chloe Comstock (1777 - 1804)
Child	Chloe Pratt (1800 - 1893)
Child	William Pratt (1802 - )
Child	Charles Pratt (1804 - )