Division of the estate of John Chadwick Jr, died intestate, at Worcester, MA 1763: Probate papers start abt. Oct. 1763:
Names Widow Sarah p. 19-23; Eldest son Daniel, second son Isaac, eldest daughter Lydia.Chadwick 2nd daughter Eunice, Chadwick, youngest daughter Sarah. From the property docs, looks like a parcel went to Clerk Chandler? P. 9-13: Case 10633:pp. 1-31: Worcester County, MA: Probate File Papers, 1731-1881. Online database. AmericanAncestors.org. New England Historic Genealogical Society, 2015. (From records supplied by the Massachusetts Supreme Judicial Court Archives.)
Above appears to be: Worcester VR: Marriages Chadwick John, Jr. and Sarah Johnson, Nov. 8, 1756. Worcester Births: Isaac, s. John, Jr. and Sarah, Mar. 15, 1759.; Sarah, d. John, Jr. and Sarah, Jan. 20, 1761.
John Chadwick, will Oct. 31, 1768: (will is not in folder) David Chadwick, executor, Jonathan Chadwick John Waite, signed bond. Case 10632:p. 1-3: Worcester County, MA: Probate File Papers, 1731-1881. Online database. AmericanAncestors.org. New England Historic Genealogical Society, 2015. (From records supplied by the Massachusetts Supreme Judicial Court Archives.)
I have no idea if any of this helps?