Jane was born about 1813. She passed away between 1850 and 1860 in Saint Charles, Illinois.
Jane was listed in the 1850 Census. ["United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M851-2WM : 12 April 2016), Jane Demerest in household of Lucinda Boston, St. Charles, Kane, Illinois, United States; citing family 1721, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).]
The Demarest Family. A record of the desMARETS family in France, the Holy Land in the Crusades, again in France, Holland, the Palatinate (Germany), again in Holland, and the migration to America, 1663. Compiled under the ampices of the DEMAREST FAMILY ASSOCIATION, Huckensack, New Jersey, Voorhis D. Demarest, President. and published in 1964. United States Library of Congress Card No. 64-22295.