My descandants and his son Michael Bartlett bn in 1790 lived in the same areas throughout their lives.Two of my Great Grandfathers siblings married two of Michael Bartlett's children.
My family links in with Josiah's son Michael Bartlett married first to Zerviah Edwards married Feb 18 1819 in Gallatin Co., IL.
I just acquired this informaton on his first marriage. William Wells, Michael Rice, Joel, Zerviah and Lucinda.
She died before 1830 and he then married Bethina Babbitt on May 31, 1833. So Zerviah must have died before 1833.
Their children: (I have confirmed these on Census records and family records) Mary, Saphira, Hiram Carroll, Christina, Cynthia Ann and Nancy.
Hiram Carroll married Eliza Ellson Ellingsworth on February 28, 1860, Rock Island Co., IL
Cynthia married Eliza brother William James Ellingsworth, Jr. on September 10, 1861, Davenport, Scott Co., IA.
The Ellingsworths and the Bartletts lived in VT, MA, NH, DE, MD, IA, IL, WY, WA, WI.
I met some descendants of the Josiah the Signer of the Declaration at a family reunion over 20yrs ago.They had purchased some desk that belonged to Josiah at an estate or auction of some sort and had pictures of it.